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 18, 2001
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Serial Issue
Number Number Date
4,821,345 07/114,568 04/18/89
4,821,373 07/094,669 04/18/89
4,821,375 07/150,059 04/18/89
4,821,380 07/102,004 04/18/89
4,821,381 07/149,306 04/18/89
4,821,383 07/155,198 04/18/89
4,821,389 07/126,648 04/18/89
4,821,399 07/156,976 04/18/89
4,821,402 06/715,947 04/18/89
4,821,406 07/160,969 04/18/89
4,821,407 07/099,885 04/18/89
4,821,411 07/166,426 04/18/89
4,821,412 06/749,763 04/18/89
4,821,413 07/035,520 04/18/89
4,821,420 07/139,983 04/18/89
4,821,426 07/104,116 04/18/89
4,821,433 07/018,054 04/18/89
4,821,435 07/098,983 04/18/89
4,821,443 07/217,589 04/18/89
4,821,462 07/091,415 04/18/89
4,821,465 06/874,501 04/18/89
4,821,487 07/109,748 04/18/89
4,821,488 06/914,067 04/18/89
4,821,492 07/156,406 04/18/89
4,821,500 07/123,050 04/18/89
4,821,508 06/743,150 04/18/89
4,821,509 07/133,154 04/18/89
4,821,511 06/925,645 04/18/89
4,821,514 07/096,418 04/18/89
4,821,528 07/154,575 04/18/89
4,821,534 07/156,872 04/18/89
4,821,537 07/066,417 04/18/89
4,821,541 07/121,252 04/18/89
4,821,542 07/220,600 04/18/89
4,821,552 07/125,924 04/18/89
4,821,556 07/184,238 04/18/89
4,821,561 07/120,618 04/18/89
4,821,562 07/030,911 04/18/89
4,821,563 07/144,471 04/18/89
4,821,566 07/168,866 04/18/89
4,821,573 07/106,846 04/18/89
4,821,574 07/075,603 04/18/89
4,821,576 07/154,582 04/18/89
4,821,580 07/148,875 04/18/89
4,821,583 07/073,098 04/18/89
4,821,589 07/177,830 04/18/89
4,821,593 07/193,035 04/18/89
4,821,602 07/116,176 04/18/89
4,821,606 07/084,432 04/18/89
4,821,609 07/087,222 04/18/89
4,821,614 07/140,971 04/18/89
4,821,615 07/160,060 04/18/89
4,821,616 07/107,641 04/18/89
4,821,620 07/144,320 04/18/89
4,821,649 07/095,124 04/18/89
4,821,653 07/238,606 04/18/89
4,821,673 06/920,549 04/18/89
4,821,690 07/196,143 04/18/89
4,821,698 06/895,217 04/18/89
4,821,701 07/213,667 04/18/89
4,821,703 07/078,884 04/18/89
4,821,711 07/142,461 04/18/89
4,821,713 07/080,388 04/18/89
4,821,720 07/115,405 04/18/89
4,821,726 07/118,675 04/18/89
4,821,730 07/244,747 04/18/89
4,821,742 07/134,122 04/18/89
4,821,744 07/068,072 04/18/89
4,821,749 07/147,626 04/18/89
4,821,750 07/121,816 04/18/89
4,821,753 07/102,640 04/18/89
4,821,756 07/168,250 04/18/89
4,821,764 07/117,628 04/18/89
4,821,766 07/166,831 04/18/89
4,821,770 07/138,179 04/18/89
4,821,772 06/719,072 04/18/89
4,821,774 07/176,870 04/18/89
4,821,784 07/103,054 04/18/89
4,821,788 07/182,888 04/18/89
4,821,790 07/146,717 04/18/89
4,821,794 07/176,934 04/18/89
4,821,803 07/067,070 04/18/89
4,821,805 06/508,657 04/18/89
4,821,807 06/873,769 04/18/89
4,821,810 07/193,388 04/18/89
4,821,811 07/174,363 04/18/89
4,821,816 07/191,584 04/18/89
4,821,825 07/045,566 04/18/89
4,821,838 07/115,216 04/18/89
4,821,841 07/062,846 04/18/89
4,821,844 07/179,776 04/18/89
4,821,850 07/031,987 04/18/89
4,821,858 07/168,126 04/18/89
4,821,867 07/202,949 04/18/89
4,821,882 07/177,753 04/18/89
4,821,902 07/176,678 04/18/89
4,821,925 07/050,850 04/18/89
4,821,927 07/026,005 04/18/89
4,821,935 06/924,533 04/18/89
4,821,944 07/229,997 04/18/89
4,821,946 07/140,201 04/18/89
4,821,947 07/154,081 04/18/89
4,821,956 07/102,169 04/18/89
4,821,959 07/079,424 04/18/89
4,821,963 07/079,494 04/18/89
4,821,965 07/182,636 04/18/89
4,821,972 06/820,665 04/18/89
4,821,975 07/153,925 04/18/89
4,821,979 07/086,398 04/18/89
4,821,998 07/122,956 04/18/89
4,822,002 07/263,813 04/18/89
4,822,015 07/126,589 04/18/89
4,822,021 07/137,683 04/18/89
4,822,025 07/219,906 04/18/89
4,822,034 07/208,173 04/18/89
4,822,035 06/890,405 04/18/89
4,822,046 07/018,480 04/18/89
4,822,050 07/023,078 04/18/89
4,822,063 07/126,082 04/18/89
4,822,066 07/107,305 04/18/89
4,822,086 07/056,432 04/18/89
4,822,091 07/171,043 04/18/89
4,822,092 07/174,047 04/18/89
4,822,093 07/066,540 04/18/89
4,822,095 07/180,826 04/18/89
4,822,097 07/094,613 04/18/89
4,822,102 07/065,490 04/18/89
4,822,117 07/061,153 04/18/89
4,822,121 07/107,214 04/18/89
4,822,126 07/053,292 04/18/89
4,822,127 06/874,919 04/18/89
4,822,128 06/919,635 04/18/89
4,822,133 07/080,439 04/18/89
4,822,137 07/133,747 04/18/89
4,822,144 07/134,432 04/18/89
4,822,149 06/585,760 04/18/89
4,822,150 07/050,809 04/18/89
4,822,151 07/162,920 04/18/89
4,822,173 07/072,836 04/18/89
4,822,179 07/006,625 04/18/89
4,822,180 07/138,093 04/18/89
4,822,187 06/932,174 04/18/89
4,822,188 06/931,873 04/18/89
4,822,213 07/139,833 04/18/89
4,822,214 07/062,171 04/18/89
4,822,217 07/153,972 04/18/89
4,822,228 06/934,868 04/18/89
4,822,229 07/021,824 04/18/89
4,822,237 06/800,577 04/18/89
4,822,241 07/080,607 04/18/89
4,822,250 07/198,223 04/18/89
4,822,268 07/155,190 04/18/89
4,822,271 07/194,487 04/18/89
4,822,272 07/108,697 04/18/89
4,822,286 07/193,010 04/18/89
4,822,287 07/201,214 04/18/89
4,822,291 07/136,440 04/18/89
4,822,294 07/014,572 04/18/89
4,822,296 07/064,233 04/18/89
4,822,299 06/671,453 04/18/89
4,822,300 07/128,430 04/18/89
4,822,309 07/059,324 04/18/89
4,822,312 06/557,813 04/18/89
4,822,314 07/065,587 04/18/89
4,822,321 07/220,286 04/18/89
4,822,323 07/113,775 04/18/89
4,822,328 07/136,109 04/18/89
4,822,329 07/111,012 04/18/89
4,822,330 07/115,480 04/18/89
4,822,331 07/118,570 04/18/89
4,822,335 07/094,111 04/18/89
4,822,360 07/169,231 04/18/89
4,822,365 07/097,286 04/18/89
4,822,369 06/872,539 04/18/89
4,822,376 07/108,485 04/18/89
4,822,382 07/115,913 04/18/89
4,822,383 07/044,091 04/18/89
4,822,385 07/072,902 04/18/89
4,822,392 07/111,125 04/18/89
4,822,402 06/865,467 04/18/89
4,822,411 07/035,988 04/18/89
4,822,413 07/058,607 04/18/89
4,822,414 07/050,462 04/18/89
4,822,415 06/801,035 04/18/89
4,822,424 07/140,148 04/18/89
4,822,430 06/768,128 04/18/89
4,822,431 06/827,956 04/18/89
4,822,437 07/157,751 04/18/89
4,822,448 07/044,063 04/18/89
4,822,463 07/074,385 04/18/89
4,822,475 07/165,653 04/18/89
4,822,483 07/028,855 04/18/89
4,822,484 07/086,144 04/18/89
4,822,486 07/117,064 04/18/89
4,822,496 07/233,576 04/18/89
4,822,507 07/105,488 04/18/89
4,822,510 07/173,328 04/18/89
4,822,530 07/176,680 04/18/89
4,822,531 07/210,501 04/18/89
4,822,550 07/037,745 04/18/89
4,822,555 07/063,657 04/18/89
4,822,559 07/095,095 04/18/89
4,822,561 07/105,645 04/18/89
4,822,574 07/115,570 04/18/89
4,822,587 07/045,835 04/18/89
4,822,592 07/153,419 04/18/89
4,822,600 07/054,438 04/18/89
4,822,604 06/736,011 04/18/89
4,822,610 07/089,539 04/18/89
4,822,612 06/882,301 04/18/89
4,822,615 06/904,833 04/18/89
4,822,616 07/014,316 04/18/89
4,822,633 06/882,498 04/18/89
4,822,642 07/119,593 04/18/89
4,822,643 07/068,648 04/18/89
4,822,647 07/041,849 04/18/89
4,822,649 07/017,218 04/18/89
4,822,652 06/931,048 04/18/89
4,822,653 07/082,009 04/18/89
4,822,690 07/256,717 04/18/89
4,822,691 07/132,027 04/18/89
4,822,697 06/937,273 04/18/89
4,822,701 07/095,264 04/18/89
4,822,702 06/434,555 04/18/89
4,822,706 07/160,651 04/18/89
4,822,723 07/126,147 04/18/89
4,822,736 06/627,957 04/18/89
4,822,737 06/662,466 04/18/89
4,822,739 06/814,179 04/18/89
4,822,743 06/681,375 04/18/89
4,822,745 06/938,547 04/18/89
4,822,751 07/030,904 04/18/89
4,822,753 07/191,637 04/18/89
4,822,759 07/212,071 04/18/89
4,822,773 07/130,916 04/18/89
4,822,776 06/792,372 04/18/89
4,822,781 07/201,010 04/18/89
4,822,784 06/861,853 04/18/89
4,822,785 07/067,507 04/18/89
4,822,786 07/063,077 04/18/89
4,822,789 07/150,619 04/18/89
4,822,797 07/026,758 04/18/89
4,822,798 06/526,931 04/18/89
4,822,806 07/002,370 04/18/89
4,822,826 07/094,134 04/18/89
4,822,829 06/860,527 04/18/89
4,822,831 06/906,014 04/18/89
4,822,833 07/153,529 04/18/89
4,822,846 07/127,505 04/18/89
4,822,853 06/885,666 04/18/89
4,822,855 07/081,464 04/18/89
4,822,856 07/016,022 04/18/89
4,822,863 06/887,036 04/18/89
4,822,879 07/131,438 04/18/89
4,822,882 07/102,359 04/18/89
4,822,892 07/165,404 04/18/89
4,822,893 07/153,167 04/18/89
4,822,896 07/147,421 04/18/89
4,822,898 06/906,373 04/18/89
4,822,914 06/412,187 04/18/89
4,822,919 07/090,200 04/18/89
4,822,920 07/116,879 04/18/89
4,822,921 07/168,064 04/18/89
4,822,924 07/137,086 04/18/89
4,822,929 07/081,993 04/18/89
4,822,956 06/895,203 04/18/89
4,822,959 07/147,748 04/18/89
4,822,966 07/245,968 04/18/89
4,822,967 07/163,618 04/18/89
4,822,972 07/019,130 04/18/89
4,822,973 07/079,515 04/18/89
4,822,974 07/157,018 04/18/89
4,823,004 07/125,009 04/18/89
4,823,007 06/941,684 04/18/89
4,823,008 07/116,987 04/18/89
4,823,033 07/162,501 04/18/89
4,823,045 07/109,174 04/18/89
4,823,046 07/069,687 04/18/89
4,823,047 07/105,849 04/18/89
4,823,060 07/085,566 04/18/89
4,823,062 07/077,112 04/18/89
4,823,065 07/161,079 04/18/89
4,823,095 07/115,454 04/18/89
4,823,109 07/181,481 04/18/89
4,823,117 07/114,332 04/18/89
4,823,118 06/779,847 04/18/89
4,823,119 06/858,553 04/18/89
4,823,127 07/040,505 04/18/89
4,823,130 07/157,768 04/18/89
4,823,132 07/145,520 04/18/89
4,823,133 07/148,783 04/18/89
4,823,135 06/914,159 04/18/89
4,823,148 07/174,831 04/18/89
4,823,156 07/155,863 04/18/89
4,823,162 07/050,816 04/18/89
4,823,170 06/704,526 04/18/89
4,823,179 06/821,305 04/18/89
4,823,198 06/811,351 04/18/89
4,823,211 07/096,857 04/18/89
4,823,216 07/112,895 04/18/89
4,823,233 06/686,310 04/18/89
4,823,234 06/880,832 04/18/89
4,823,258 07/098,313 04/18/89
4,823,259 07/213,506 04/18/89
4,823,266 07/102,223 04/18/89
4,823,273 07/036,678 04/18/89
4,823,275 07/044,944 04/18/89
4,823,282 06/911,060 04/18/89
4,823,289 06/731,141 04/18/89
4,823,290 07/076,235 04/18/89
4,823,298 07/048,428 04/18/89
4,823,301 07/111,965 04/18/89
4,823,303 07/073,744 04/18/89
4,823,305 07/203,620 04/18/89
4,823,309 07/087,842 04/18/89
4,823,310 07/084,253 04/18/89
4,823,327 07/057,062 04/18/89
4,823,337 07/099,268 04/18/89
4,823,350 07/205,322 04/18/89
4,823,364 07/025,168 04/18/89
4,823,372 07/013,739 04/18/89
4,823,374 07/218,465 04/18/89
4,823,388 07/014,213 04/18/89
4,823,389 06/863,218 04/18/89
4,823,390 07/154,304 04/18/89
PATENTS WHICH EXPIRED ON April 13, 2001
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Serial Issue
Number Number Date
5,201,073 07/696,065 04/13/93
5,201,077 07/876,092 04/13/93
5,201,078 07/712,448 04/13/93
5,201,079 07/764,635 04/13/93
5,201,090 07/765,731 04/13/93
5,201,095 07/724,592 04/13/93
5,201,102 07/740,939 04/13/93
5,201,111 07/659,369 04/13/93
5,201,113 07/748,781 04/13/93
5,201,121 07/754,805 04/13/93
5,201,124 07/827,145 04/13/93
5,201,127 07/836,875 04/13/93
5,201,129 07/777,237 04/13/93
5,201,136 07/469,034 04/13/93
5,201,138 07/882,882 04/13/93
5,201,139 07/940,285 04/13/93
5,201,140 07/626,011 04/13/93
5,201,147 07/874,436 04/13/93
5,201,159 07/678,952 04/13/93
5,201,161 07/725,613 04/13/93
5,201,163 07/614,917 04/13/93
5,201,168 07/833,104 04/13/93
5,201,187 07/463,559 04/13/93
5,201,188 07/739,512 04/13/93
5,201,189 07/755,692 04/13/93
5,201,190 07/837,011 04/13/93
5,201,193 07/837,145 04/13/93
5,201,197 07/890,832 04/13/93
5,201,200 07/717,993 04/13/93
5,201,206 07/920,516 04/13/93
5,201,213 07/496,597 04/13/93
5,201,218 07/795,168 04/13/93
5,201,223 07/932,376 04/13/93
5,201,225 07/586,889 04/13/93
5,201,226 07/780,185 04/13/93
5,201,229 07/603,328 04/13/93
5,201,246 07/916,479 04/13/93
5,201,249 07/841,339 04/13/93
5,201,258 07/837,930 04/13/93
5,201,263 07/897,435 04/13/93
5,201,267 07/695,915 04/13/93
5,201,273 07/763,948 04/13/93
5,201,274 07/780,508 04/13/93
5,201,276 07/805,867 04/13/93
5,201,289 07/937,273 04/13/93
5,201,301 07/889,420 04/13/93
5,201,303 07/899,246 04/13/93
5,201,304 07/766,621 04/13/93
5,201,306 07/761,165 04/13/93
5,201,308 07/831,507 04/13/93
5,201,309 07/795,566 04/13/93
5,201,311 07/927,780 04/13/93
5,201,312 07/939,381 04/13/93
5,201,322 07/501,335 04/13/93
5,201,323 07/659,631 04/13/93
5,201,324 07/732,109 04/13/93
5,201,329 07/823,357 04/13/93
5,201,337 07/698,473 04/13/93
5,201,338 07/795,333 04/13/93
5,201,342 07/847,536 04/13/93
5,201,345 07/734,993 04/13/93
5,201,350 07/805,117 04/13/93
5,201,352 07/828,925 04/13/93
5,201,357 07/821,225 04/13/93
5,201,365 07/637,666 04/13/93
5,201,369 07/788,349 04/13/93
5,201,373 07/806,888 04/13/93
5,201,377 07/790,219 04/13/93
5,201,378 07/657,828 04/13/93
5,201,396 07/800,544 04/13/93
5,201,403 07/830,800 04/13/93
5,201,405 07/872,591 04/13/93
5,201,407 07/916,203 04/13/93
5,201,408 07/748,741 04/13/93
5,201,417 07/881,608 04/13/93
5,201,419 07/839,938 04/13/93
5,201,420 07/886,720 04/13/93
5,201,422 07/733,302 04/13/93
5,201,423 07/796,054 04/13/93
5,201,431 07/901,570 04/13/93
5,201,438 07/885,869 04/13/93
5,201,439 07/891,184 04/13/93
5,201,447 07/777,613 04/13/93
5,201,448 07/786,098 04/13/93
5,201,467 07/754,055 04/13/93
5,201,475 07/896,957 04/13/93
5,201,476 07/764,526 04/13/93
5,201,480 07/750,242 04/13/93
5,201,485 07/739,456 04/13/93
5,201,487 07/870,273 04/13/93
5,201,491 07/838,986 04/13/93
5,201,492 07/895,117 04/13/93
5,201,494 07/951,942 04/13/93
5,201,501 07/833,875 04/13/93
5,201,503 07/778,361 04/13/93
5,201,512 07/827,301 04/13/93
5,201,515 07/834,956 04/13/93
5,201,536 07/588,233 04/13/93
5,201,540 07/921,014 04/13/93
5,201,548 07/830,470 04/13/93
5,201,550 07/843,554 04/13/93
5,201,555 07/669,258 04/13/93
5,201,559 07/621,336 04/13/93
5,201,561 07/656,217 04/13/93
5,201,563 07/852,981 04/13/93
5,201,566 07/854,870 04/13/93
5,201,569 07/841,014 04/13/93
5,201,583 07/851,499 04/13/93
5,201,593 07/796,802 04/13/93
5,201,595 07/834,786 04/13/93
5,201,606 07/658,527 04/13/93
5,201,609 07/734,796 04/13/93
5,201,629 07/682,758 04/13/93
5,201,643 07/677,323 04/13/93
5,201,651 07/667,794 04/13/93
5,201,656 07/592,718 04/13/93
5,201,658 07/793,476 04/13/93
5,201,659 07/936,345 04/13/93
5,201,662 07/749,250 04/13/93
5,201,673 07/690,837 04/13/93
5,201,674 07/896,449 04/13/93
5,201,675 07/814,405 04/13/93
5,201,676 07/826,123 04/13/93
5,201,682 07/791,247 04/13/93
5,201,685 07/691,383 04/13/93
5,201,690 07/860,161 04/13/93
5,201,693 07/694,493 04/13/93
5,201,694 07/792,035 04/13/93
5,201,698 07/460,065 04/13/93
5,201,700 07/886,877 04/13/93
5,201,705 07/520,129 04/13/93
5,201,707 07/858,404 04/13/93
5,201,708 07/829,708 04/13/93
5,201,717 07/622,868 04/13/93
5,201,728 07/695,107 04/13/93
5,201,729 07/621,451 04/13/93
5,201,736 07/819,811 04/13/93
5,201,755 07/580,472 04/13/93
5,201,770 07/811,316 04/13/93
5,201,773 07/872,574 04/13/93
5,201,779 07/835,248 04/13/93
5,201,784 07/930,807 04/13/93
5,201,785 07/827,894 04/13/93
5,201,786 07/679,007 04/13/93
5,201,793 07/869,307 04/13/93
5,201,800 07/737,127 04/13/93
5,201,802 07/829,212 04/13/93
5,201,804 07/749,295 04/13/93
5,201,815 07/811,399 04/13/93
5,201,829 07/810,700 04/13/93
5,201,842 07/827,407 04/13/93
5,201,848 07/770,071 04/13/93
5,201,851 07/768,514 04/13/93
5,201,856 07/766,891 04/13/93
5,201,859 07/848,774 04/13/93
5,201,868 07/644,003 04/13/93
5,201,893 07/735,997 04/13/93
5,201,894 07/858,920 04/13/93
5,201,912 07/851,686 04/13/93
5,201,918 07/665,039 04/13/93
5,201,919 07/808,682 04/13/93
5,201,921 07/756,339 04/13/93
5,201,922 07/805,676 04/13/93
5,201,923 07/735,923 04/13/93
5,201,935 07/934,304 04/13/93
5,201,938 07/733,048 04/13/93
5,201,950 07/674,293 04/13/93
5,201,955 07/667,175 04/13/93
5,201,963 07/800,712 04/13/93
5,201,964 07/374,112 04/13/93
5,201,970 07/771,725 04/13/93
5,201,971 07/918,894 04/13/93
5,201,974 07/475,578 04/13/93
5,201,981 07/745,748 04/13/93
5,201,982 07/766,806 04/13/93
5,201,983 07/805,310 04/13/93
5,201,985 07/667,601 04/13/93
5,201,995 07/852,411 04/13/93
5,202,002 07/882,498 04/13/93
5,202,009 07/603,510 04/13/93
5,202,011 07/711,802 04/13/93
5,202,026 07/862,689 04/13/93
5,202,032 07/689,384 04/13/93
5,202,042 07/725,344 04/13/93
5,202,045 07/293,721 04/13/93
5,202,049 07/759,206 04/13/93
5,202,054 07/646,898 04/13/93
5,202,056 07/814,533 04/13/93
5,202,065 07/683,638 04/13/93
5,202,070 07/649,634 04/13/93
5,202,073 07/647,684 04/13/93
5,202,080 07/808,914 04/13/93
5,202,087 07/922,824 04/13/93
5,202,088 07/813,697 04/13/93
5,202,092 07/801,889 04/13/93
5,202,106 07/886,334 04/13/93
5,202,111 07/697,835 04/13/93
5,202,115 07/518,516 04/13/93
5,202,116 07/335,399 04/13/93
5,202,119 07/722,813 04/13/93
5,202,120 07/428,147 04/13/93
5,202,122 07/682,567 04/13/93
5,202,129 07/563,091 04/13/93
5,202,134 07/592,850 04/13/93
5,202,136 07/773,509 04/13/93
5,202,139 07/828,406 04/13/93
5,202,150 07/874,141 04/13/93
5,202,152 07/782,401 04/13/93
5,202,157 07/749,336 04/13/93
5,202,158 07/689,306 04/13/93
5,202,162 07/418,399 04/13/93
5,202,179 07/507,130 04/13/93
5,202,183 07/707,941 04/13/93
5,202,186 07/742,100 04/13/93
5,202,197 07/778,533 04/13/93
5,202,199 07/789,590 04/13/93
5,202,203 07/680,973 04/13/93
5,202,219 07/681,710 04/13/93
5,202,220 07/818,292 04/13/93
5,202,233 07/816,795 04/13/93
5,202,235 07/635,941 04/13/93
5,202,237 07/670,498 04/13/93
5,202,244 07/731,876 04/13/93
5,202,249 07/744,570 04/13/93
5,202,250 07/104,984 04/13/93
5,202,259 07/291,125 04/13/93
5,202,265 07/782,171 04/13/93
5,202,266 07/733,628 04/13/93
5,202,270 07/576,085 04/13/93
5,202,286 07/745,229 04/13/93
5,202,292 07/899,156 04/13/93
5,202,295 07/779,462 04/13/93
5,202,296 07/840,843 04/13/93
5,202,305 07/800,731 04/13/93
5,202,306 07/761,551 04/13/93
5,202,307 07/885,065 04/13/93
5,202,308 07/806,996 04/13/93
5,202,311 07/524,144 04/13/93
5,202,315 07/494,163 04/13/93
5,202,323 07/768,182 04/13/93
5,202,331 07/678,244 04/13/93
5,202,334 07/729,352 04/13/93
5,202,339 07/660,562 04/13/93
5,202,341 07/735,581 04/13/93
5,202,351 07/643,983 04/13/93
5,202,367 07/860,837 04/13/93
5,202,368 07/585,098 04/13/93
5,202,371 07/784,077 04/13/93
5,202,375 07/700,332 04/13/93
5,202,380 07/903,426 04/13/93
5,202,386 07/703,965 04/13/93
5,202,400 07/746,991 04/13/93
5,202,409 07/799,967 04/13/93
5,202,419 07/841,293 04/13/93
5,202,420 07/603,451 04/13/93
5,202,425 07/603,503 04/13/93
5,202,426 07/629,101 04/13/93
5,202,427 07/659,469 04/13/93
5,202,434 07/856,267 04/13/93
5,202,441 07/606,403 04/13/93
5,202,443 07/762,688 04/13/93
5,202,444 07/795,801 04/13/93
5,202,453 07/769,487 04/13/93
5,202,459 07/598,233 04/13/93
5,202,460 07/805,894 04/13/93
5,202,464 07/684,334 04/13/93
5,202,466 07/922,486 04/13/93
5,202,501 07/754,184 04/13/93
5,202,504 07/646,096 04/13/93
5,202,510 07/728,378 04/13/93
5,202,530 07/864,270 04/13/93
5,202,534 07/779,257 04/13/93
5,202,539 07/751,089 04/13/93
5,202,551 07/706,812 04/13/93
5,202,572 07/826,636 04/13/93
5,202,575 07/698,151 04/13/93
5,202,582 07/735,786 04/13/93
5,202,589 07/549,009 04/13/93
5,202,597 07/772,331 04/13/93
5,202,599 07/879,914 04/13/93
5,202,602 07/804,558 04/13/93
5,202,606 07/827,520 04/13/93
5,202,615 07/574,217 04/13/93
5,202,619 07/751,932 04/13/93
5,202,620 07/775,573 04/13/93
5,202,622 07/720,072 04/13/93
5,202,624 07/744,205 04/13/93
5,202,629 07/727,092 04/13/93
5,202,630 07/850,984 04/13/93
5,202,635 07/642,411 04/13/93
5,202,650 07/720,279 04/13/93
5,202,660 07/857,625 04/13/93
5,202,661 07/697,128 04/13/93
5,202,671 07/777,477 04/13/93
5,202,681 07/831,623 04/13/93
5,202,682 07/780,409 04/13/93
5,202,687 07/714,246 04/13/93
5,202,689 07/748,877 04/13/93
5,202,691 07/877,432 04/13/93
5,202,693 07/857,201 04/13/93
5,202,697 07/642,842 04/13/93
5,202,705 07/593,926 04/13/93
5,202,719 07/924,438 04/13/93
5,202,724 07/798,113 04/13/93
5,202,730 07/723,212 04/13/93
5,202,737 07/897,697 04/13/93
5,202,738 07/744,103 04/13/93
5,202,741 07/905,989 04/13/93
5,202,742 07/592,235 04/13/93
5,202,743 07/854,723 04/13/93
5,202,754 07/760,041 04/13/93
5,202,758 07/760,495 04/13/93
5,202,767 07/634,323 04/13/93
5,202,771 07/742,534 04/13/93
5,202,773 07/596,292 04/13/93
5,202,786 07/758,143 04/13/93
5,202,794 07/640,373 04/13/93
5,202,799 07/719,379 04/13/93
5,202,818 07/529,542 04/13/93
5,202,833 07/691,151 04/13/93
5,202,859 07/650,483 04/13/93
5,202,868 07/530,017 04/13/93
5,202,881 07/825,817 04/13/93
5,202,882 07/683,689 04/13/93
5,202,888 07/500,601 04/13/93
5,202,891 07/813,211 04/13/93
5,202,892 07/792,318 04/13/93
5,202,896 07/730,759 04/13/93
5,202,902 07/688,396 04/13/93
5,202,906 07/137,129 04/13/93
5,202,910 07/902,770 04/13/93
5,202,912 07/756,944 04/13/93
5,202,916 07/565,947 04/13/93
5,202,937 07/859,003 04/13/93
5,202,944 07/708,977 04/13/93
5,202,945 07/808,742 04/13/93
5,202,968 07/758,358 04/13/93
5,202,972 07/725,919 04/13/93
5,202,985 07/801,320 04/13/93
5,202,992 07/689,559 04/13/93
5,202,996 07/527,715 04/13/93
5,203,002 07/457,515 04/13/93
5,203,007 07/770,675 04/13/93
5,203,021 07/600,946 04/13/93
5,203,022 07/665,204 04/13/93
5,203,028 07/591,066 04/13/93
5,203,029 07/704,959 04/13/93
PATENTS WHICH EXPIRED ON April 15, 2001
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Serial Issue
Number Number Date
5,619,753 08/467,220 04/15/97
5,619,757 08/517,972 04/15/97
5,619,758 08/533,692 04/15/97
5,619,760 08/594,429 04/15/97
5,619,764 08/630,627 04/15/97
5,619,767 08/543,413 04/15/97
5,619,769 08/352,139 04/15/97
5,619,785 08/394,896 04/15/97
5,619,794 08/405,946 04/15/97
5,619,800 08/423,366 04/15/97
5,619,803 08/555,150 04/15/97
5,619,808 08/387,800 04/15/97
5,619,810 08/558,555 04/15/97
5,619,817 08/415,565 04/15/97
5,619,818 08/520,162 04/15/97
5,619,819 08/510,187 04/15/97
5,619,821 08/494,499 04/15/97
5,619,826 08/572,030 04/15/97
5,619,834 08/567,514 04/15/97
5,619,837 08/506,710 04/15/97
5,619,842 08/577,491 04/15/97
5,619,846 08/441,422 04/15/97
5,619,847 08/568,828 04/15/97
5,619,852 08/499,689 04/15/97
5,619,857 08/512,363 04/15/97
5,619,865 08/517,790 04/15/97
5,619,872 08/523,796 04/15/97
5,619,873 08/666,057 04/15/97
5,619,874 08/659,231 04/15/97
5,619,880 08/406,991 04/15/97
5,619,895 08/555,375 04/15/97
5,619,896 08/495,320 04/15/97
5,619,901 08/317,709 04/15/97
5,619,902 08/497,644 04/15/97
5,619,905 08/602,306 04/15/97
5,619,906 08/603,249 04/15/97
5,619,909 08/566,127 04/15/97
5,619,910 08/582,873 04/15/97
5,619,914 08/515,810 04/15/97
5,619,940 08/568,228 04/15/97
5,619,941 08/604,250 04/15/97
5,619,945 08/591,181 04/15/97
5,619,952 08/384,745 04/15/97
5,619,960 08/618,123 04/15/97
5,619,968 08/282,422 04/15/97
5,619,970 08/644,321 04/15/97
5,619,971 08/490,839 04/15/97
5,619,977 08/548,797 04/15/97
5,619,978 08/645,506 04/15/97
5,619,981 08/596,736 04/15/97
5,619,985 08/510,850 04/15/97
5,620,001 08/233,060 04/15/97
5,620,004 08/546,669 04/15/97
5,620,010 08/617,352 04/15/97
5,620,013 08/326,991 04/15/97
5,620,019 08/256,304 04/15/97
5,620,020 08/401,888 04/15/97
5,620,021 08/524,237 04/15/97
5,620,022 08/571,356 04/15/97
5,620,025 08/347,685 04/15/97
5,620,032 08/420,345 04/15/97
5,620,034 08/360,385 04/15/97
5,620,042 08/636,255 04/15/97
5,620,048 08/536,790 04/15/97
5,620,054 08/471,306 04/15/97
5,620,059 08/287,858 04/15/97
5,620,063 08/550,070 04/15/97
5,620,065 08/283,649 04/15/97
5,620,070 08/555,705 04/15/97
5,620,073 08/610,846 04/15/97
5,620,090 08/413,896 04/15/97
5,620,092 08/634,962 04/15/97
5,620,099 08/348,113 04/15/97
5,620,101 08/349,939 04/15/97
5,620,102 08/392,032 04/15/97
5,620,112 08/609,353 04/15/97
5,620,117 08/489,681 04/15/97
5,620,120 08/455,100 04/15/97
5,620,121 08/443,239 04/15/97
5,620,123 08/451,227 04/15/97
5,620,124 08/641,886 04/15/97
5,620,127 08/441,689 04/15/97
5,620,129 08/390,677 04/15/97
5,620,130 08/500,630 04/15/97
5,620,143 08/328,105 04/15/97
5,620,145 08/361,364 04/15/97
5,620,146 08/500,969 04/15/97
5,620,147 08/539,114 04/15/97
5,620,153 08/406,476 04/15/97
5,620,158 08/352,477 04/15/97
5,620,159 08/543,023 04/15/97
5,620,163 08/411,516 04/15/97
5,620,166 08/284,239 04/15/97
5,620,177 08/347,455 04/15/97
5,620,181 08/392,538 04/15/97
5,620,182 08/165,676 04/15/97
5,620,185 08/610,151 04/15/97
5,620,193 08/565,963 04/15/97
5,620,197 08/550,432 04/15/97
5,620,214 08/012,503 04/15/97
5,620,215 08/530,944 04/15/97
5,620,219 08/621,931 04/15/97
5,620,222 08/388,387 04/15/97
5,620,224 08/311,945 04/15/97
5,620,229 08/629,841 04/15/97
5,620,231 08/618,168 04/15/97
5,620,232 08/506,009 04/15/97
5,620,248 08/564,628 04/15/97
5,620,251 08/481,400 04/15/97
5,620,255 08/510,240 04/15/97
5,620,257 08/617,132 04/15/97
5,620,259 08/655,467 04/15/97
5,620,267 08/412,765 04/15/97
5,620,271 08/527,661 04/15/97
5,620,272 08/438,361 04/15/97
5,620,273 08/507,445 04/15/97
5,620,277 08/347,707 04/15/97
5,620,278 08/341,539 04/15/97
5,620,286 08/336,847 04/15/97
5,620,292 08/588,627 04/15/97
5,620,309 08/380,021 04/15/97
5,620,311 08/575,195 04/15/97
5,620,314 08/391,779 04/15/97
5,620,315 08/530,218 04/15/97
5,620,331 08/356,685 04/15/97
5,620,332 08/513,535 04/15/97
5,620,345 08/618,656 04/15/97
5,620,349 08/687,696 04/15/97
5,620,356 08/379,791 04/15/97
5,620,357 08/423,252 04/15/97
5,620,359 08/320,197 04/15/97
5,620,361 08/608,560 04/15/97
5,620,365 08/541,886 04/15/97
5,620,366 08/617,646 04/15/97
5,620,367 08/403,961 04/15/97
5,620,375 08/617,938 04/15/97
5,620,377 08/577,273 04/15/97
5,620,378 08/679,171 04/15/97
5,620,380 08/569,755 04/15/97
5,620,396 08/293,544 04/15/97
5,620,397 08/580,805 04/15/97
5,620,408 08/421,986 04/15/97
5,620,410 08/538,320 04/15/97
5,620,412 08/489,830 04/15/97
5,620,416 08/473,318 04/15/97
5,620,421 08/287,674 04/15/97
5,620,429 08/493,795 04/15/97
5,620,435 08/539,246 04/15/97
5,620,440 08/338,331 04/15/97
5,620,446 08/481,841 04/15/97
5,620,452 08/361,823 04/15/97
5,620,453 08/372,849 04/15/97
5,620,462 08/431,436 04/15/97
5,620,464 08/376,353 04/15/97
5,620,469 08/321,389 04/15/97
5,620,470 08/653,386 04/15/97
5,620,475 08/421,780 04/15/97
5,620,485 08/574,421 04/15/97
5,620,487 08/336,440 04/15/97
5,620,491 08/400,749 04/15/97
5,620,492 08/596,165 04/15/97
5,620,500 08/418,445 04/15/97
5,620,506 08/564,911 04/15/97
5,620,507 08/494,879 04/15/97
5,620,517 08/470,028 04/15/97
5,620,518 08/373,947 04/15/97
5,620,524 08/395,613 04/15/97
5,620,532 08/470,436 04/15/97
5,620,551 08/417,655 04/15/97
5,620,568 08/659,975 04/15/97
5,620,570 08/334,531 04/15/97
5,620,576 08/683,905 04/15/97
5,620,589 08/367,413 04/15/97
5,620,595 08/456,706 04/15/97
5,620,606 08/400,239 04/15/97
5,620,622 08/489,229 04/15/97
5,620,627 08/502,065 04/15/97
5,620,647 08/120,022 04/15/97
5,620,652 08/410,801 04/15/97
5,620,673 08/513,527 04/15/97
5,620,677 08/189,949 04/15/97
5,620,679 08/485,223 04/15/97
5,620,680 08/115,528 04/15/97
5,620,686 08/454,747 04/15/97
5,620,700 08/437,471 04/15/97
5,620,778 08/467,286 04/15/97
5,620,794 08/466,149 04/15/97
5,620,805 08/535,120 04/15/97
5,620,843 07/867,194 04/15/97
5,620,845 08/306,250 04/15/97
5,620,872 08/479,866 04/15/97
5,620,881 08/222,124 04/15/97
5,620,887 08/340,136 04/15/97
5,620,903 08/374,001 04/15/97
5,620,932 08/266,866 04/15/97
5,620,938 08/387,742 04/15/97
5,620,944 08/543,065 04/15/97
5,620,951 08/411,358 04/15/97
5,620,954 08/451,307 04/15/97
5,620,958 08/227,184 04/15/97
5,620,972 08/492,558 04/15/97
5,620,992 08/397,229 04/15/97
5,620,993 08/488,267 04/15/97
5,620,998 08/472,102 04/15/97
5,621,003 08/515,330 04/15/97
5,621,012 08/457,770 04/15/97
5,621,023 08/353,540 04/15/97
5,621,027 08/439,809 04/15/97
5,621,034 08/608,830 04/15/97
5,621,041 07/686,603 04/15/97
5,621,057 08/455,489 04/15/97
5,621,058 08/547,539 04/15/97
5,621,063 08/609,924 04/15/97
5,621,072 08/418,857 04/15/97
5,621,085 08/459,649 04/15/97
5,621,095 08/594,764 04/15/97
5,621,097 08/553,009 04/15/97
5,621,107 08/580,124 04/15/97
5,621,111 08/544,245 04/15/97
5,621,118 08/211,660 04/15/97
5,621,120 08/265,307 04/15/97
5,621,133 08/465,481 04/15/97
5,621,140 08/361,627 04/15/97
5,621,148 08/382,312 04/15/97
5,621,159 08/552,179 04/15/97
5,621,163 08/580,073 04/15/97
5,621,168 08/493,304 04/15/97
5,621,170 08/431,543 04/15/97
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