Requests for Reexamination Filed Notice under 37 CFR 1.11(c). The requests for reexamination listed below are open to inspection by the general public in the indicated Examining Groups. Copies of the requests and related papers may be obtained by paying the fee therefor established in the Rules (37 CFR 1.19(a)). In the event correspondence to the patent owner is not received, this notice will be considered to be constructive notice to the patent owner and reexamination will proceed (37 CFR 1.248(a)(5) and 1.525(b)). 5,108,420, Reexam. S.N. 90/006,043, Apr. 28, 1992, Cl. 606/213, APERTURE OCCLUSION DEVICE, Lloyd Marks, Owner of Record: Inventor, Attorney or Agent: Blank Rome Comisky and McCauley, LLP, Washington, DC, Ex. Gp.: 3731, Requester: Owner 5,172,111, Reexam. S.N. 90/006,044, Jun. 27, 2001, Cl. 340/825.31, STORED MEDIA SCREENING DEVICE, John W. Olivo, Jr., Owner of Record: Inventor, Attorney or Agent: None, Ex. Gp.: 2635, Requester: Owner 5,471,669, Reexam. S.N. 90/006,039, Jun. 20, 2001, Cl. 902/025, COUPON SAVINGS ACCOUNT SYSTEM, David G. Lidman, Owner of Record: Alchemist and Co., Inc., West Roxbury, MA, Attorney or Agent: Robert E. Hunt, Wolf, Greenfield and Sacks, Boston, MA, Ex. Gp.: 2876, Requester: UPromise, Inc., Brookline, MA 5,559,041, Reexam. S.N. 90/006,041, Jun. 22, 2001, Cl. 436/529, IMMUNOASSAY DEVICES AND MATERIALS, Jemo Kang, et. al., Owner of Record: PMB-Selfcare LLC, Waltham, MA, Attorney or Agent: Birch Stewart Kolasch and Birch, Falls Church, VA, Ex. Gp.: 1641, Requester: Steven B. Kelber, Piper Marbury Rudnick and Wolfe LLP, Washington, DC 5,980,416, Reexam. S.N. 90/006,040, Jun. 20, 2001, Cl. 475/230, DIFFERENTIAL FOR A VEHICLE, Sven B. Gafvert, Owner of Record: Rolf Gafvert, Sugarland, TX; and Ulf Gafvert, Washbarn, WI, Attorney or Agent: Schwegman Lundberg Woessner and Kluth, Minneapolis, MN, Ex. Gp.: 3681, Requester: Owners 6,179,076, Reexam. S.N. 90/006,042, Jun. 22, 2001, Cl. 180/065.1, MOTORIZED CHAIR BASE, Geoffrey R. Fernie, et. al., Owner of Record: Sunnybrook and Women's College Health Sciences Centre, North York, Ontario, Canada, Attorney or Agent: Bereskin and Parr, Toronto, Ontario, Canada, Ex. Gp.: 3619, Requester: Owner 6,234,998, Reexam. S.N. 90/006,045, Jun. 28, 2001, Cl. 604/131, SEALLESS ROTARY BLOOD PUMP, Richard K. Wampler, Owner of Record: Kriton Medical, Inc., Chicago, IL, Attorney or Agent: George H. Gerstman, Seyfarth Shaw, Chicago, IL, Ex. Gp.: 3763, Requester: Owner