Notice of Expiration of Patents
Due to Failure to Pay Maintenance Fee
35 U.S.C. 41 and 37 CFR 1.362(g) provide that if the required
maintenance fee and any applicable surcharge are not paid in a patent
requiring such payment, the patent will expire at the end of the 4th, 8th
or 12th anniversary of the grant of the patent depending on the first
maintenance fee which was not paid.
According to the records of the Office, the patents listed below have
expired due to failure to pay the required maintenance fee and any
applicable surcharge.
PATENTS WHICH EXPIRED ON April 25, 2001
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Serial Issue
Number Number Date
4,823,410 06/907,870 04/25/89
4,823,424 07/095,765 04/25/89
4,823,426 07/158,881 04/25/89
4,823,435 07/227,154 04/25/89
4,823,441 07/118,959 04/25/89
4,823,444 06/840,607 04/25/89
4,823,459 07/101,861 04/25/89
4,823,460 07/126,384 04/25/89
4,823,466 07/115,978 04/25/89
4,823,476 07/120,337 04/25/89
4,823,484 07/130,493 04/25/89
4,823,485 07/127,897 04/25/89
4,823,488 07/174,711 04/25/89
4,823,490 06/918,773 04/25/89
4,823,500 07/116,705 04/25/89
4,823,509 07/154,384 04/25/89
4,823,522 07/041,180 04/25/89
4,823,525 07/243,916 04/25/89
4,823,526 07/119,378 04/25/89
4,823,527 07/091,692 04/25/89
4,823,529 07/026,944 04/25/89
4,823,531 07/172,275 04/25/89
4,823,535 07/152,022 04/25/89
4,823,539 07/089,371 04/25/89
4,823,540 07/050,787 04/25/89
4,823,543 07/069,479 04/25/89
4,823,544 07/146,937 04/25/89
4,823,547 07/089,340 04/25/89
4,823,554 07/220,022 04/25/89
4,823,565 07/177,895 04/25/89
4,823,570 07/068,422 04/25/89
4,823,572 06/902,872 04/25/89
4,823,574 06/912,423 04/25/89
4,823,583 07/231,623 04/25/89
4,823,587 07/111,631 04/25/89
4,823,598 07/135,314 04/25/89
4,823,604 07/052,889 04/25/89
4,823,606 07/210,723 04/25/89
4,823,607 07/051,526 04/25/89
4,823,611 07/122,048 04/25/89
4,823,616 07/067,896 04/25/89
4,823,624 07/248,632 04/25/89
4,823,625 07/193,660 04/25/89
4,823,636 07/043,371 04/25/89
4,823,637 07/076,577 04/25/89
4,823,645 07/097,720 04/25/89
4,823,648 06/427,049 04/25/89
4,823,652 07/051,277 04/25/89
4,823,674 07/044,850 04/25/89
4,823,678 07/112,296 04/25/89
4,823,679 07/188,534 04/25/89
4,823,682 06/522,884 04/25/89
4,823,691 07/166,686 04/25/89
4,823,703 07/083,814 04/25/89
4,823,707 07/165,073 04/25/89
4,823,708 07/165,021 04/25/89
4,823,724 07/156,701 04/25/89
4,823,727 07/153,225 04/25/89
4,823,738 07/031,864 04/25/89
4,823,744 07/182,217 04/25/89
4,823,753 07/113,735 04/25/89
4,823,755 07/137,528 04/25/89
4,823,758 07/087,823 04/25/89
4,823,761 07/067,699 04/25/89
4,823,768 07/122,383 04/25/89
4,823,777 07/073,254 04/25/89
4,823,788 07/182,456 04/25/89
4,823,796 07/034,487 04/25/89
4,823,799 07/170,690 04/25/89
4,823,807 07/155,033 04/25/89
4,823,810 07/159,418 04/25/89
4,823,814 07/004,100 04/25/89
4,823,819 07/180,244 04/25/89
4,823,830 07/144,830 04/25/89
4,823,831 07/253,225 04/25/89
4,823,839 07/037,808 04/25/89
4,823,842 07/158,084 04/25/89
4,823,843 07/201,081 04/25/89
4,823,844 07/115,338 04/25/89
4,823,851 07/165,504 04/25/89
4,823,858 07/057,382 04/25/89
4,823,867 06/917,024 04/25/89
4,823,887 07/174,345 04/25/89
4,823,888 07/133,347 04/25/89
4,823,897 07/110,865 04/25/89
4,823,907 07/051,321 04/25/89
4,823,909 07/102,978 04/25/89
4,823,920 07/188,939 04/25/89
4,823,922 07/069,304 04/25/89
4,823,932 07/159,206 04/25/89
4,823,939 07/212,064 04/25/89
4,823,947 07/124,345 04/25/89
4,823,954 07/106,887 04/25/89
4,823,956 06/896,420 04/25/89
4,823,971 07/024,248 04/25/89
4,823,978 07/095,523 04/25/89
4,823,979 07/229,716 04/25/89
4,823,983 07/105,044 04/25/89
4,823,985 07/218,139 04/25/89
4,824,000 07/159,527 04/25/89
4,824,022 07/153,144 04/25/89
4,824,026 07/080,637 04/25/89
4,824,028 07/140,754 04/25/89
4,824,031 07/138,364 04/25/89
4,824,032 07/109,040 04/25/89
4,824,033 07/189,801 04/25/89
4,824,035 07/160,017 04/25/89
4,824,041 07/155,963 04/25/89
4,824,054 07/214,894 04/25/89
4,824,055 07/009,731 04/25/89
4,824,058 07/132,217 04/25/89
4,824,061 07/147,437 04/25/89
4,824,069 07/212,793 04/25/89
4,824,070 07/212,792 04/25/89
4,824,076 07/095,139 04/25/89
4,824,085 07/051,535 04/25/89
4,824,087 07/197,721 04/25/89
4,824,093 07/190,873 04/25/89
4,824,096 07/074,688 04/25/89
4,824,099 07/105,409 04/25/89
4,824,111 07/148,634 04/25/89
4,824,124 07/112,379 04/25/89
4,824,129 07/107,052 04/25/89
4,824,130 07/109,660 04/25/89
4,824,141 07/034,915 04/25/89
4,824,142 07/091,344 04/25/89
4,824,146 07/153,078 04/25/89
4,824,147 07/051,954 04/25/89
4,824,155 07/108,391 04/25/89
4,824,156 07/148,077 04/25/89
4,824,165 07/108,685 04/25/89
4,824,179 06/891,711 04/25/89
4,824,182 07/092,974 04/25/89
4,824,185 07/220,595 04/25/89
4,824,189 07/032,490 04/25/89
4,824,198 06/743,271 04/25/89
4,824,205 07/094,739 04/25/89
4,824,214 07/013,480 04/25/89
4,824,216 07/039,721 04/25/89
4,824,222 06/902,751 04/25/89
4,824,225 07/205,483 04/25/89
4,824,231 07/075,415 04/25/89
4,824,237 06/826,961 04/25/89
4,824,248 07/135,256 04/25/89
4,824,251 07/101,102 04/25/89
4,824,257 07/145,835 04/25/89
4,824,259 07/183,278 04/25/89
4,824,283 07/001,699 04/25/89
4,824,287 07/157,938 04/25/89
4,824,298 07/112,743 04/25/89
4,824,301 07/186,996 04/25/89
4,824,304 07/076,572 04/25/89
4,824,307 07/154,757 04/25/89
4,824,314 07/014,903 04/25/89
4,824,315 07/075,733 04/25/89
4,824,322 06/638,493 04/25/89
4,824,332 07/164,833 04/25/89
4,824,334 07/115,711 04/25/89
4,824,340 07/180,217 04/25/89
4,824,343 07/134,356 04/25/89
4,824,352 07/109,936 04/25/89
4,824,355 07/116,037 04/25/89
4,824,373 07/103,648 04/25/89
4,824,384 07/136,785 04/25/89
4,824,388 07/193,917 04/25/89
4,824,391 07/111,951 04/25/89
4,824,392 07/118,916 04/25/89
4,824,397 07/188,102 04/25/89
4,824,426 07/048,266 04/25/89
4,824,432 06/843,528 04/25/89
4,824,436 07/042,569 04/25/89
4,824,439 07/133,323 04/25/89
4,824,440 07/020,901 04/25/89
4,824,441 07/126,409 04/25/89
4,824,443 07/178,452 04/25/89
4,824,447 06/947,791 04/25/89
4,824,449 07/044,501 04/25/89
4,824,454 07/164,408 04/25/89
4,824,458 07/024,601 04/25/89
4,824,472 07/137,384 04/25/89
4,824,474 07/069,022 04/25/89
4,824,478 07/161,979 04/25/89
4,824,484 07/187,209 04/25/89
4,824,493 07/013,887 04/25/89
4,824,499 07/215,008 04/25/89
4,824,502 07/163,681 04/25/89
4,824,503 07/079,596 04/25/89
4,824,504 07/137,364 04/25/89
4,824,516 06/938,724 04/25/89
4,824,517 07/099,437 04/25/89
4,824,525 07/108,491 04/25/89
4,824,530 07/222,142 04/25/89
4,824,534 07/011,936 04/25/89
4,824,539 07/139,823 04/25/89
4,824,552 07/196,005 04/25/89
4,824,559 07/054,442 04/25/89
4,824,565 07/150,978 04/25/89
4,824,573 07/006,151 04/25/89
4,824,576 06/885,202 04/25/89
4,824,578 07/023,861 04/25/89
4,824,582 06/930,836 04/25/89
4,824,592 07/173,327 04/25/89
4,824,593 07/084,004 04/25/89
4,824,599 07/128,302 04/25/89
4,824,614 07/036,331 04/25/89
4,824,616 07/200,828 04/25/89
4,824,621 07/166,680 04/25/89
4,824,623 07/075,820 04/25/89
4,824,625 06/907,927 04/25/89
4,824,627 07/180,381 04/25/89
4,824,637 07/147,047 04/25/89
4,824,638 07/176,409 04/25/89
4,824,642 06/921,319 04/25/89
4,824,646 07/129,118 04/25/89
4,824,659 06/742,436 04/25/89
4,824,662 07/062,200 04/25/89
4,824,669 07/031,487 04/25/89
4,824,692 07/078,326 04/25/89
4,824,695 06/816,220 04/25/89
4,824,696 06/793,107 04/25/89
4,824,704 07/173,583 04/25/89
4,824,709 07/198,151 04/25/89
4,824,711 07/008,242 04/25/89
4,824,727 06/613,718 04/25/89
4,824,728 07/106,527 04/25/89
4,824,731 07/149,560 04/25/89
4,824,734 07/070,144 04/25/89
4,824,762 07/067,313 04/25/89
4,824,778 06/867,554 04/25/89
4,824,780 06/703,307 04/25/89
4,824,786 07/107,244 04/25/89
4,824,792 06/937,026 04/25/89
4,824,804 07/187,606 04/25/89
4,824,812 07/125,713 04/25/89
4,824,822 07/191,821 04/25/89
4,824,828 07/202,047 04/25/89
4,824,830 07/070,685 04/25/89
4,824,833 07/167,344 04/25/89
4,824,834 07/105,581 04/25/89
4,824,836 07/196,303 04/25/89
4,824,837 06/881,779 04/25/89
4,824,842 06/829,382 04/25/89
4,824,849 07/090,641 04/25/89
4,824,856 06/896,154 04/25/89
4,824,862 07/197,275 04/25/89
4,824,867 06/910,417 04/25/89
4,824,871 07/162,126 04/25/89
4,824,874 06/905,718 04/25/89
4,824,877 07/151,686 04/25/89
4,824,885 07/070,179 04/25/89
4,824,886 07/229,806 04/25/89
4,824,897 07/220,964 04/25/89
4,824,899 07/122,712 04/25/89
4,824,916 06/885,357 04/25/89
4,824,925 07/131,889 04/25/89
4,824,930 07/135,174 04/25/89
4,824,931 07/155,788 04/25/89
4,824,942 07/147,119 04/25/89
4,824,952 06/754,286 04/25/89
4,824,975 07/049,749 04/25/89
4,824,977 07/166,936 04/25/89
4,824,983 07/106,561 04/25/89
4,824,990 07/041,503 04/25/89
4,824,994 06/650,498 04/25/89
4,824,996 06/927,907 04/25/89
4,824,998 07/122,453 04/25/89
4,825,003 07/095,218 04/25/89
4,825,007 07/116,734 04/25/89
4,825,021 07/155,663 04/25/89
4,825,027 07/101,447 04/25/89
4,825,032 07/091,472 04/25/89
4,825,055 07/102,608 04/25/89
4,825,060 07/060,387 04/25/89
4,825,061 07/082,546 04/25/89
4,825,067 07/136,960 04/25/89
4,825,073 07/132,437 04/25/89
4,825,084 06/897,992 04/25/89
4,825,086 07/073,760 04/25/89
4,825,094 07/152,198 04/25/89
4,825,104 07/102,418 04/25/89
4,825,115 07/204,909 04/25/89
4,825,116 07/171,963 04/25/89
4,825,125 07/099,026 04/25/89
4,825,131 07/115,038 04/25/89
4,825,149 07/137,487 04/25/89
4,825,163 07/225,781 04/25/89
4,825,169 07/071,297 04/25/89
4,825,173 07/145,933 04/25/89
4,825,181 07/163,560 04/25/89
4,825,186 07/134,660 04/25/89
4,825,196 07/141,662 04/25/89
4,825,208 07/039,432 04/25/89
4,825,216 06/805,068 04/25/89
4,825,219 07/006,533 04/25/89
4,825,221 07/129,241 04/25/89
4,825,230 07/058,873 04/25/89
4,825,244 07/124,219 04/25/89
4,825,252 07/204,618 04/25/89
4,825,270 07/009,479 04/25/89
4,825,274 06/929,910 04/25/89
4,825,290 07/133,299 04/25/89
4,825,296 07/085,941 04/25/89
4,825,298 07/196,332 04/25/89
4,825,301 07/074,773 04/25/89
4,825,306 07/024,902 04/25/89
4,825,319 07/067,488 04/25/89
4,825,321 07/052,709 04/25/89
4,825,322 07/211,069 04/25/89
4,825,325 07/115,142 04/25/89
4,825,336 07/196,775 04/25/89
4,825,337 07/194,830 04/25/89
4,825,357 07/110,080 04/25/89
4,825,362 06/947,431 04/25/89
4,825,369 06/870,782 04/25/89
4,825,379 06/901,668 04/25/89
4,825,381 07/033,298 04/25/89
4,825,393 07/041,228 04/25/89
4,825,394 06/731,916 04/25/89
4,825,399 06/933,635 04/25/89
4,825,402 06/848,666 04/25/89
4,825,409 06/733,159 04/25/89
4,825,410 07/112,348 04/25/89
4,825,415 06/938,915 04/25/89
4,825,421 06/865,083 04/25/89
4,825,437 07/040,382 04/25/89
4,825,453 06/788,861 04/25/89
4,825,463 07/147,648 04/25/89
4,825,467 06/934,810 04/25/89
4,825,468 06/923,131 04/25/89
PATENTS WHICH EXPIRED ON April 20, 2001
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Serial Issue
Number Number Date
5,203,033 07/735,745 04/20/93
5,203,034 07/803,476 04/20/93
5,203,037 07/805,951 04/20/93
5,203,041 07/871,555 04/20/93
5,203,046 07/734,143 04/20/93
5,203,048 07/832,589 04/20/93
5,203,060 07/823,013 04/20/93
5,203,068 07/925,827 04/20/93
5,203,082 07/750,183 04/20/93
5,203,083 07/831,777 04/20/93
5,203,088 07/781,199 04/20/93
5,203,095 07/900,470 04/20/93
5,203,097 07/570,202 04/20/93
5,203,101 07/729,945 04/20/93
5,203,102 07/797,958 04/20/93
5,203,107 07/678,112 04/20/93
5,203,115 07/845,935 04/20/93
5,203,118 07/843,625 04/20/93
5,203,119 07/673,651 04/20/93
5,203,122 07/894,404 04/20/93
5,203,132 07/761,713 04/20/93
5,203,137 07/799,191 04/20/93
5,203,145 07/803,280 04/20/93
5,203,149 07/912,309 04/20/93
5,203,150 07/817,131 04/20/93
5,203,156 07/748,832 04/20/93
5,203,164 07/654,584 04/20/93
5,203,169 07/810,070 04/20/93
5,203,170 07/853,089 04/20/93
5,203,174 07/726,371 04/20/93
5,203,177 07/797,360 04/20/93
5,203,182 07/749,916 04/20/93
5,203,187 07/902,341 04/20/93
5,203,197 07/746,863 04/20/93
5,203,207 07/603,497 04/20/93
5,203,212 07/654,310 04/20/93
5,203,219 07/770,589 04/20/93
5,203,226 07/683,812 04/20/93
5,203,229 07/875,033 04/20/93
5,203,233 07/805,058 04/20/93
5,203,237 07/654,400 04/20/93
5,203,239 07/774,678 04/20/93
5,203,241 07/835,839 04/20/93
5,203,248 07/841,061 04/20/93
5,203,249 07/753,288 04/20/93
5,203,257 07/693,459 04/20/93
5,203,261 07/788,331 04/20/93
5,203,269 07/651,149 04/20/93
5,203,271 07/704,089 04/20/93
5,203,272 07/744,451 04/20/93
5,203,276 07/853,908 04/20/93
5,203,278 07/814,792 04/20/93
5,203,279 07/807,962 04/20/93
5,203,282 07/793,209 04/20/93
5,203,285 07/716,981 04/20/93
5,203,290 07/929,434 04/20/93
5,203,296 07/865,490 04/20/93
5,203,305 07/903,920 04/20/93
5,203,313 07/901,491 04/20/93
5,203,315 07/931,750 04/20/93
5,203,316 07/794,675 04/20/93
5,203,322 07/753,847 04/20/93
5,203,324 07/679,517 04/20/93
5,203,340 07/851,712 04/20/93
5,203,345 07/784,210 04/20/93
5,203,346 07/739,913 04/20/93
5,203,349 07/814,573 04/20/93
5,203,355 07/655,706 04/20/93
5,203,356 07/711,526 04/20/93
5,203,357 07/770,880 04/20/93
5,203,371 07/972,298 04/20/93
5,203,375 07/657,655 04/20/93
5,203,376 07/855,786 04/20/93
5,203,380 07/594,118 04/20/93
5,203,385 07/861,321 04/20/93
5,203,386 07/794,951 04/20/93
5,203,387 07/882,503 04/20/93
5,203,389 07/972,767 04/20/93
5,203,390 07/742,755 04/20/93
5,203,395 07/853,906 04/20/93
5,203,405 07/829,191 04/20/93
5,203,421 07/875,540 04/20/93
5,203,422 07/904,458 04/20/93
5,203,427 07/883,677 04/20/93
5,203,430 07/778,026 04/20/93
5,203,431 07/841,143 04/20/93
5,203,432 07/793,056 04/20/93
5,203,438 07/668,216 04/20/93
5,203,444 07/794,737 04/20/93
5,203,450 07/834,485 04/20/93
5,203,451 07/836,098 04/20/93
5,203,454 07/781,105 04/20/93
5,203,457 07/867,337 04/20/93
5,203,458 07/844,177 04/20/93
5,203,461 07/771,621 04/20/93
5,203,462 07/738,261 04/20/93
5,203,467 07/704,944 04/20/93
5,203,468 07/907,067 04/20/93
5,203,469 07/890,726 04/20/93
5,203,482 07/793,785 04/20/93
5,203,483 07/895,147 04/20/93
5,203,485 07/418,526 04/20/93
5,203,487 07/857,334 04/20/93
5,203,491 07/778,366 04/20/93
5,203,493 07/863,769 04/20/93
5,203,498 07/917,188 04/20/93
5,203,500 07/708,750 04/20/93
5,203,507 07/625,466 04/20/93
5,203,509 07/862,885 04/20/93
5,203,518 07/743,450 04/20/93
5,203,519 07/662,755 04/20/93
5,203,520 07/783,574 04/20/93
5,203,522 07/725,140 04/20/93
5,203,527 07/845,697 04/20/93
5,203,528 07/834,385 04/20/93
5,203,530 07/836,916 04/20/93
5,203,531 07/843,759 04/20/93
5,203,532 07/760,971 04/20/93
5,203,533 07/785,764 04/20/93
5,203,534 07/629,517 04/20/93
5,203,535 07/715,069 04/20/93
5,203,539 07/924,098 04/20/93
5,203,544 07/727,433 04/20/93
5,203,561 07/865,176 04/20/93
5,203,564 07/711,159 04/20/93
5,203,567 07/886,763 04/20/93
5,203,568 07/862,880 04/20/93
5,203,571 07/895,329 04/20/93
5,203,581 07/741,111 04/20/93
5,203,583 07/829,562 04/20/93
5,203,593 07/526,707 04/20/93
5,203,597 07/720,958 04/20/93
5,203,601 07/858,035 04/20/93
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5,203,604 07/879,970 04/20/93
5,203,618 07/719,611 04/20/93
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5,203,644 07/751,900 04/20/93
5,203,646 07/831,878 04/20/93
5,203,647 07/905,431 04/20/93
5,203,650 07/819,313 04/20/93
5,203,651 07/715,343 04/20/93
5,203,666 07/940,534 04/20/93
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5,203,671 07/727,200 04/20/93
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5,203,690 07/814,226 04/20/93
5,203,692 07/647,535 04/20/93
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5,203,701 07/885,341 04/20/93
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5,203,710 07/821,738 04/20/93
5,203,713 07/791,054 04/20/93
5,203,716 07/896,937 04/20/93
5,203,720 07/772,925 04/20/93
5,203,724 07/788,323 04/20/93
5,203,729 07/819,091 04/20/93
5,203,747 07/774,555 04/20/93
5,203,753 07/874,692 04/20/93
5,203,754 07/884,945 04/20/93
5,203,757 07/826,391 04/20/93
5,203,766 07/710,359 04/20/93
5,203,783 07/697,323 04/20/93
5,203,793 07/805,596 04/20/93
5,203,798 07/720,001 04/20/93
5,203,812 07/598,504 04/20/93
5,203,818 07/787,625 04/20/93
5,203,821 07/813,760 04/20/93
5,203,824 07/763,826 04/20/93
5,203,825 07/711,844 04/20/93
5,203,828 07/706,855 04/20/93
5,203,833 07/851,314 04/20/93
5,203,837 07/782,590 04/20/93
5,203,838 07/745,235 04/20/93
5,203,841 07/169,198 04/20/93
5,203,855 07/812,514 04/20/93
5,203,857 07/775,866 04/20/93
5,203,861 07/809,869 04/20/93
5,203,868 07/774,973 04/20/93
5,203,875 07/860,543 04/20/93
5,203,887 07/804,752 04/20/93
5,203,888 07/839,846 04/20/93
5,203,891 07/862,709 04/20/93
5,203,892 07/916,274 04/20/93
5,203,894 07/863,245 04/20/93
5,203,904 07/745,713 04/20/93
5,203,915 07/855,678 04/20/93
5,203,917 07/803,573 04/20/93
5,203,921 07/643,447 04/20/93
5,203,932 07/669,380 04/20/93
5,203,933 07/625,966 04/20/93
5,203,940 07/796,498 04/20/93
5,203,943 07/626,826 04/20/93
5,203,944 07/774,610 04/20/93
5,203,948 07/760,735 04/20/93
5,203,949 07/643,733 04/20/93
5,203,964 07/815,896 04/20/93
5,203,965 07/657,358 04/20/93
5,203,966 07/834,860 04/20/93
5,203,969 07/772,932 04/20/93
5,203,971 07/788,919 04/20/93
5,203,972 07/798,645 04/20/93
5,203,973 07/875,546 04/20/93
5,203,975 07/784,241 04/20/93
5,203,979 07/776,233 04/20/93
5,203,980 07/782,151 04/20/93
5,203,996 07/803,674 04/20/93
5,204,000 07/829,755 04/20/93
5,204,008 07/858,001 04/20/93
5,204,011 07/894,490 04/20/93
5,204,016 07/367,022 04/20/93
5,204,018 07/643,965 04/20/93
5,204,020 07/875,609 04/20/93
5,204,024 07/888,379 04/20/93
5,204,025 07/681,899 04/20/93
5,204,031 07/827,537 04/20/93
5,204,044 07/662,998 04/20/93
5,204,056 07/923,214 04/20/93
5,204,059 07/804,486 04/20/93
5,204,069 07/772,155 04/20/93
5,204,070 07/770,858 04/20/93
5,204,071 07/620,810 04/20/93
5,204,073 07/755,785 04/20/93
5,204,074 07/613,064 04/20/93
5,204,077 07/760,136 04/20/93
5,204,079 07/656,543 04/20/93
5,204,080 07/545,691 04/20/93
5,204,088 07/749,486 04/20/93
5,204,107 07/794,909 04/20/93
5,204,124 07/789,977 04/20/93
5,204,127 07/698,044 04/20/93
5,204,133 07/823,583 04/20/93
5,204,139 07/785,108 04/20/93
5,204,140 07/621,660 04/20/93
5,204,146 07/656,955 04/20/93
5,204,154 07/844,518 04/20/93
5,204,157 07/511,076 04/20/93
5,204,175 07/711,888 04/20/93
5,204,176 07/845,104 04/20/93
5,204,178 07/784,427 04/20/93
5,204,202 07/494,527 04/20/93
5,204,231 07/861,123 04/20/93
5,204,233 07/772,230 04/20/93
5,204,235 07/810,164 04/20/93
5,204,243 07/480,097 04/20/93
5,204,246 07/634,256 04/20/93
5,204,251 07/717,864 04/20/93
5,204,289 07/779,016 04/20/93
5,204,292 07/678,788 04/20/93
5,204,295 07/725,933 04/20/93
5,204,299 07/787,808 04/20/93
5,204,300 07/366,260 04/20/93
5,204,302 07/755,076 04/20/93
5,204,315 07/837,918 04/20/93
5,204,317 07/737,296 04/20/93
5,204,319 07/738,307 04/20/93
5,204,321 07/902,509 04/20/93
5,204,323 07/763,477 04/20/93
5,204,329 07/535,672 04/20/93
5,204,334 07/765,360 04/20/93
5,204,337 07/917,915 04/20/93
5,204,343 07/776,771 04/20/93
5,204,355 07/806,975 04/20/93
5,204,372 07/789,693 04/20/93
5,204,380 07/751,190 04/20/93
5,204,381 07/870,857 04/20/93
5,204,384 07/644,788 04/20/93
5,204,395 07/805,159 04/20/93
5,204,396 07/897,672 04/20/93
5,204,402 07/625,546 04/20/93
5,204,408 07/782,640 04/20/93
5,204,412 07/614,630 04/20/93
5,204,420 07/814,987 04/20/93
5,204,426 07/784,083 04/20/93
5,204,430 07/702,153 04/20/93
5,204,431 07/822,730 04/20/93
5,204,436 07/739,857 04/20/93
5,204,450 07/441,368 04/20/93
5,204,465 07/803,067 04/20/93
5,204,467 07/810,997 04/20/93
5,204,471 07/920,217 04/20/93
5,204,472 07/807,523 04/20/93
5,204,474 07/709,688 04/20/93
5,204,484 07/899,033 04/20/93
5,204,486 07/689,972 04/20/93
5,204,489 07/628,012 04/20/93
5,204,498 07/811,701 04/20/93
5,204,508 07/560,373 04/20/93
5,204,513 07/591,739 04/20/93
5,204,514 07/660,713 04/20/93
5,204,520 07/811,749 04/20/93
5,204,526 07/837,092 04/20/93
5,204,528 07/667,434 04/20/93
5,204,529 07/642,933 04/20/93
5,204,551 07/724,256 04/20/93
5,204,558 07/760,458 04/20/93
5,204,560 07/771,669 04/20/93
5,204,563 07/823,884 04/20/93
5,204,568 07/763,988 04/20/93
5,204,570 07/756,435 04/20/93
5,204,574 07/799,109 04/20/93
5,204,580 07/729,853 04/20/93
5,204,584 07/763,305 04/20/93
5,204,586 07/731,672 04/20/93
5,204,596 07/582,965 04/20/93
5,204,598 07/773,593 04/20/93
5,204,607 07/838,415 04/20/93
5,204,613 07/694,885 04/20/93
5,204,617 07/780,053 04/20/93
5,204,618 07/836,512 04/20/93
5,204,625 07/631,121 04/20/93
5,204,627 07/669,143 04/20/93
5,204,632 07/851,638 04/20/93
5,204,646 07/778,262 04/20/93
5,204,650 07/692,255 04/20/93
5,204,657 07/706,152 04/20/93
5,204,671 07/643,305 04/20/93
5,204,672 07/641,162 04/20/93
5,204,680 07/775,950 04/20/93
5,204,682 07/834,071 04/20/93
5,204,685 07/907,251 04/20/93
5,204,700 07/606,457 04/20/93
5,204,706 07/797,951 04/20/93
5,204,715 07/664,935 04/20/93
5,204,732 07/846,811 04/20/93
5,204,745 07/741,245 04/20/93
5,204,746 07/664,742 04/20/93
5,204,751 07/568,974 04/20/93
5,204,755 07/428,495 04/20/93
5,204,757 07/639,796 04/20/93
5,204,760 07/749,531 04/20/93
5,204,770 07/721,459 04/20/93
5,204,775 07/830,728 04/20/93
5,204,783 07/759,584 04/20/93
5,204,784 07/622,911 04/20/93
5,204,800 07/563,084 04/20/93
5,204,809 07/863,620 04/20/93
5,204,810 07/601,787 04/20/93
5,204,812 07/823,085 04/20/93
5,204,823 07/673,767 04/20/93
5,204,843 07/723,181 04/20/93
5,204,849 07/491,906 04/20/93
5,204,855 07/639,487 04/20/93
5,204,856 07/638,956 04/20/93
5,204,863 07/652,433 04/20/93
5,204,865 07/571,539 04/20/93
5,204,866 07/831,729 04/20/93
5,204,872 07/685,629 04/20/93
5,204,877 07/829,731 04/20/93
5,204,886 07/804,867 04/20/93
5,204,896 07/880,299 04/20/93
5,204,900 07/664,107 04/20/93
5,204,904 06/936,459 04/20/93
5,204,907 07/706,459 04/20/93
5,204,908 07/588,446 04/20/93
5,204,911 07/706,800 04/20/93
5,204,912 07/749,479 04/20/93
5,204,919 07/468,598 04/20/93
5,204,926 07/826,893 04/20/93
5,204,933 07/802,209 04/20/93
5,204,934 07/591,904 04/20/93
5,204,935 07/865,748 04/20/93
5,204,939 07/627,151 04/20/93
5,204,943 07/581,148 04/20/93
5,204,944 07/387,605 04/20/93
5,204,948 07/576,860 04/20/93
5,204,955 07/580,133 04/20/93
5,204,957 07/954,940 04/20/93
5,204,959 07/370,002 04/20/93
5,204,980 07/865,217 04/20/93
PATENTS WHICH EXPIRED ON April 22, 2001
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Serial Issue
Number Number Date
5,621,914 08/394,615 04/22/97
5,621,919 08/503,034 04/22/97
5,621,920 08/601,185 04/22/97
5,621,921 08/441,093 04/22/97
5,621,923 08/594,682 04/22/97
5,621,926 08/507,675 04/22/97
5,621,928 08/689,596 04/22/97
5,621,929 08/400,135 04/22/97
5,621,932 08/510,925 04/22/97
5,621,944 08/529,804 04/22/97
5,621,945 08/349,943 04/22/97
5,621,946 08/578,484 04/22/97
5,621,950 08/562,549 04/22/97
5,621,951 08/664,670 04/22/97
5,621,971 08/501,694 04/22/97
5,621,973 08/445,579 04/22/97
5,621,974 08/534,483 04/22/97
5,621,976 08/475,636 04/22/97
5,621,977 08/512,069 04/22/97
5,621,984 08/511,625 04/22/97
5,621,987 08/482,414 04/22/97
5,621,994 08/434,245 04/22/97
5,621,999 08/512,682 04/22/97
5,622,000 08/526,219 04/22/97
5,622,003 08/500,660 04/22/97
5,622,004 08/273,732 04/22/97
5,622,005 08/554,056 04/22/97
5,622,010 08/516,616 04/22/97
5,622,012 08/237,837 04/22/97
5,622,020 08/567,270 04/22/97
5,622,021 08/422,063 04/22/97
5,622,023 08/413,952 04/22/97
5,622,026 08/407,206 04/22/97
5,622,028 08/507,005 04/22/97
5,622,038 08/547,253 04/22/97
5,622,039 08/434,021 04/22/97
5,622,041 08/249,913 04/22/97
5,622,062 08/640,402 04/22/97
5,622,064 08/728,667 04/22/97
5,622,067 08/377,923 04/22/97
5,622,068 08/403,741 04/22/97
5,622,074 08/489,389 04/22/97
5,622,076 08/434,602 04/22/97
5,622,092 08/407,290 04/22/97
5,622,114 08/606,753 04/22/97
5,622,119 08/518,304 04/22/97
5,622,120 08/608,754 04/22/97
5,622,121 08/401,275 04/22/97
5,622,127 08/495,790 04/22/97
5,622,128 08/546,265 04/22/97
5,622,129 08/546,266 04/22/97
5,622,138 08/375,480 04/22/97
5,622,142 08/512,670 04/22/97
5,622,159 08/435,643 04/22/97
5,622,164 08/197,365 04/22/97
5,622,165 08/628,775 04/22/97
5,622,167 08/644,106 04/22/97
5,622,168 08/400,273 04/22/97
5,622,178 08/237,669 04/22/97
5,622,189 08/467,609 04/22/97
5,622,192 08/567,703 04/22/97
5,622,193 08/564,485 04/22/97
5,622,194 08/298,143 04/22/97
5,622,195 08/692,976 04/22/97
5,622,196 08/587,373 04/22/97
5,622,197 08/411,962 04/22/97
5,622,203 08/538,586 04/22/97
5,622,205 08/528,134 04/22/97
5,622,231 08/492,388 04/22/97
5,622,235 08/447,822 04/22/97
5,622,241 08/527,244 04/22/97
5,622,242 08/263,773 04/22/97
5,622,248 08/517,703 04/22/97
5,622,249 08/411,801 04/22/97
5,622,254 08/633,264 04/22/97
5,622,255 08/397,505 04/22/97
5,622,256 08/493,006 04/22/97
5,622,259 08/473,681 04/22/97
5,622,260 08/052,129 04/22/97
5,622,264 08/585,382 04/22/97
5,622,272 08/382,597 04/22/97
5,622,273 08/528,714 04/22/97
5,622,274 08/456,773 04/22/97
5,622,277 08/666,585 04/22/97
5,622,278 08/558,396 04/22/97
5,622,281 08/488,783 04/22/97
5,622,284 08/627,990 04/22/97
5,622,287 08/511,917 04/22/97
5,622,290 08/421,786 04/22/97
5,622,291 08/469,910 04/22/97
5,622,292 08/438,046 04/22/97
5,622,294 08/506,355 04/22/97
5,622,307 08/513,352 04/22/97
5,622,313 08/398,376 04/22/97
5,622,314 08/411,109 04/22/97
5,622,317 08/363,512 04/22/97
5,622,321 08/496,885 04/22/97
5,622,333 08/582,273 04/22/97
5,622,340 08/566,835 04/22/97
5,622,343 08/420,475 04/22/97
5,622,346 08/297,137 04/22/97
5,622,349 08/352,917 04/22/97
5,622,352 08/622,435 04/22/97
5,622,361 08/428,491 04/22/97
5,622,367 08/547,726 04/22/97
5,622,368 08/600,734 04/22/97
5,622,370 08/672,934 04/22/97
5,622,373 08/424,431 04/22/97
5,622,374 08/432,214 04/22/97
5,622,386 08/403,465 04/22/97
5,622,388 08/500,051 04/22/97
5,622,395 08/414,186 04/22/97
5,622,398 08/539,404 04/22/97
5,622,403 08/477,992 04/22/97
5,622,413 08/516,083 04/22/97
5,622,416 08/441,594 04/22/97
5,622,419 08/368,277 04/22/97
5,622,423 08/640,021 04/22/97
5,622,425 08/481,471 04/22/97
5,622,426 08/431,855 04/22/97
5,622,430 08/404,089 04/22/97
5,622,441 08/492,246 04/22/97
5,622,445 08/540,954 04/22/97
5,622,446 08/499,105 04/22/97
5,622,452 08/531,513 04/22/97
5,622,454 08/446,597 04/22/97
5,622,458 08/278,508 04/22/97
5,622,468 08/424,392 04/22/97
5,622,469 08/405,756 04/22/97
5,622,480 08/517,919 04/22/97
5,622,482 08/550,354 04/22/97
5,622,483 08/501,574 04/22/97
5,622,485 08/508,224 04/22/97
5,622,497 08/515,535 04/22/97
5,622,502 08/343,624 04/22/97
5,622,510 08/493,822 04/22/97
5,622,513 08/547,361 04/22/97
5,622,526 08/218,427 04/22/97
5,622,533 08/572,271 04/22/97
5,622,534 08/336,604 04/22/97
5,622,536 08/368,702 04/22/97
5,622,537 08/417,830 04/22/97
5,622,551 08/536,073 04/22/97
5,622,564 08/375,816 04/22/97
5,622,571 08/429,051 04/22/97
5,622,580 08/390,863 04/22/97
5,622,582 08/446,610 04/22/97
5,622,597 08/377,144 04/22/97
5,622,599 08/266,773 04/22/97
5,622,616 08/380,211 04/22/97
5,622,626 08/227,875 04/22/97
5,622,631 08/512,201 04/22/97
5,622,647 08/447,302 04/22/97
5,622,659 08/367,874 04/22/97
5,622,664 08/293,964 04/22/97
5,622,666 08/411,782 04/22/97
5,622,674 08/411,836 04/22/97
5,622,680 08/438,873 04/22/97
5,622,681 08/513,165 04/22/97
5,622,683 08/258,961 04/22/97
5,622,686 08/472,721 04/22/97
5,622,689 08/485,224 04/22/97
5,622,706 08/334,425 04/22/97
5,622,725 08/672,686 04/22/97
5,622,728 08/437,292 04/22/97
5,622,742 08/568,102 04/22/97
5,622,762 08/257,142 04/22/97
5,622,763 08/681,346 04/22/97
5,622,767 08/485,022 04/22/97
5,622,787 08/311,441 04/22/97
5,622,793 08/341,553 04/22/97
5,622,851 08/370,975 04/22/97
5,622,864 08/511,705 04/22/97
5,622,869 08/500,073 04/22/97
5,622,872 08/439,413 04/22/97
5,622,904 08/396,082 04/22/97
5,622,907 07/483,641 04/22/97
5,622,908 08/276,522 04/22/97
5,622,910 08/162,169 04/22/97
5,622,914 08/529,963 04/22/97
5,622,926 08/454,173 04/22/97
5,622,967 08/450,961 04/22/97
5,622,976 08/244,904 04/22/97
5,622,978 08/536,552 04/22/97
5,622,981 08/418,903 04/22/97
5,622,988 08/405,336 04/22/97
5,622,991 08/297,863 04/22/97
5,622,993 08/523,084 04/22/97
5,622,995 08/290,450 04/22/97
5,622,996 08/389,851 04/22/97
5,622,997 08/469,232 04/22/97
5,623,014 08/347,466 04/22/97
5,623,024 08/591,320 04/22/97
5,623,036 08/575,316 04/22/97
5,623,040 08/510,453 04/22/97
5,623,053 08/004,492 04/22/97
5,623,073 08/063,531 04/22/97
5,623,075 08/496,203 04/22/97
5,623,096 08/491,693 04/22/97
5,623,097 08/348,083 04/22/97
5,623,099 08/517,436 04/22/97
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