Patent Terms Extended Under 35 U.S.C. 156 Certificates extending the terms of the following patents were issued on September 5, 1997. U.S. Patent No. 4,048,306; Granted September 13, 1977, to Roland Maier et al.; Owner of Record: Boehringer Ingelheim GmbH; Title: Aldehyde-Erythromycyclamine Condensation Products; Classification: 424/180; Product Trade Name: DYNABAC (dirithromycin); Original Expiration Date: March 29, 1996; Term Extended: 1,626 days; Expiration Date of Extension: September 10, 2000. U.S. Patent No. 4,235,892; Granted November 25, 1980, to T. L. Nagabhushan et al.; Owner of Record: Schering Corp.; Title: 1-Aryl-2-Acylamino-3-Fluoro-l-Propanols, Methods for Their Use as Antibacterial Agents and Compositions Useful Therefor; Classification: 514/522; Product Trade Name: NUFLOR (Florfenicol); Original Expiration Date: February 5, 1999; Term Extended: Three years; Expiration Date of Extension: February 5, 2002. U.S. Patent No. 4,379,785; Granted April 12, 1983, to Rudi Weyer et al.; Owner of Record: Hoechst Atiengesellschaft; Title: Heterocyclic Substituted Sulfonyl Ureas, and Their Use; Classification: 514/183; Product Trade Name: AMAYRL (glimepiride); Original Expiration Date: December 17, 2000; Term Extended: 1,571 days; Expiration Date of Extension: April 6, 2005. U.S. Patent No. 4,883,812; Granted November 28, 1989, to Salvador Moncada et al.; Owner of Record: Glaxo Wellcome Inc.; Title: Treatment of Hypertension Using Prostacyclin; Classification: 514/469; Product Trade Name: FLOLAN (epoprostenol sodium); Original Expiration Date: September 3, 2002; Term Extended: 1,347 days; Expiration Date of Extension: May 12, 2006.