Granted Patent
Utility
US 5,981,527 · App. 09/000,192
Cyclic GMP-specific phosphodiesterase inhibitors
Inventors:
Alain Claude-Marie Daugan, Francoise Gellibert
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: May 15, 1998
Inventors
Alain Claude-Marie Daugan
Francoise Gellibert
Assignee (at issue)
ICOS CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.