Patent Terms Extended Under 35 U.S.C.   156

   Certificates extending the term of the following patents were issued
on November 20, 1997.

U.S. Patent No. 4,154,839; Granted May 15, 1979, to Egbert Wehinger et
al.; Owner of Record: Bayer Aktiengesellschaft; Title: 2,6-Dimethyl-3-
Classification: 424/266; Product Trade Name: NISOCOR ; Original Expiration
Date: November 2, 1996; Term Extended: Two years; Extended Expiration
Date: November 2, 1998.

U.S. Patent No. 4,457,942; Granted July 3, 1984, to Saul W. Brusilow;
Owner of Record: Ucyclyd Pharma, Inc.; Title: Process for Waste Nitrogen
Removal; Classification: 424/317; Product Trade Name: Buphenyl Powder
(sodium phenylbutyrate); Original Expiration Date: August 20, 2002; Term
Extended: two years; Extended Expiration Date: August 20, 2004.

U.S. Patent No. 4,814,470; Granted March 21, 1989, to Michel Colin et
al.; Owner of Record: Rhone-Poulenc Rorer S.A.; Title: Taxol
Derivatives, Their Preparation and Pharmaceutical Compositions
Containing Them; Classification: 514/449; Product Trade Name:
TAXOTERE ; Original Expiration Date: July 14, 2007; Term Extended:
1,035 days; Extended Expiration Date: May 14, 2010.

U.S. Patent No. 4,816,456; Granted: March 28, 1989, to Dr. William K.
Summers; Owner of Record: Dr. William K. Summers; Title: Administration
of Monoamine Acridines in Cholinergic Neuronal Deficit States;
Classification: 514/255; Product Trade Name: COGNEX ; Original
Expiration Date: October 1, 2006; Term Extended: 343 days; Extended
Expiration Date: September 9, 2007.