Requests for Reexaminations 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)).

   4,425,481, Reexam. No. 90/004,231, Apr. 24, 1996, Cl. 381/068,
PROGRAMMABLE SIGNAL PROCESSING DEVICE, Stephan Mansgold, et. al., Owner
of Record: Stephan Mansgold, Molnlycke, Sweden; Anne Leijon, Goteborg,
Sweden; Bjorn Israelsson, Goteborg, Sweden,  Attorney or Agent: William
D. Bauer, Minnesota Mining & Manu. Co., St. Paul, Minn., Ex. Gp.: 2608,
Requester: Scott C. Harris Fish & Richardson, La Jolla, Calif.

   5,395,407, Reexam. No. 90/004,232, Apr. 29, 1996, Cl. 051/309,
ABRASIVE MATERIAL AND METHOD, Thomas E. Cattringer, et. al., Owner of
Record: Norton Co., Worchester, Mass.,  Attorney or Agent: Weil Gotshal
& Manges, New York, N.Y., Ex. Gp.: 1108, Requester: Owner