Granted Patent
Utility
US 5,688,815 · App. 08/722,820
Hydroxypyridinones
Inventor:
Paul Zbinden
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Sep 27, 1996
Inventor
Paul Zbinden
Assignee (at issue)
Ciba-Geigy
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.