IP Library › Granted Patent US 5,109,132
Granted Patent Utility
US 5,109,132 · App. 07/581,518

Process for the preparation of 3-exomethylene cepham derivatives

Inventors: Jan Verweij, Jan J. De Koning, Hendrik A. Witkamp
Patented Case View Patent ↗
Granted: Apr 28, 1992 Filed: Sep 10, 1990
Inventors
Jan Verweij
Jan J. De Koning
Hendrik A. Witkamp
Assignee (at issue)
Gist-Brocades N.V.

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Quick Facts
Patent No.
US 5,109,132
App. No.
07/581,518
Filed
1990-09-10
Granted
1992-04-28
Kind
A