Granted Patent
Utility
US 5,346,895 · App. 08/001,010
Chromans and thiochromans with heteroarylethynyl substituents at the 7-position having retinoid-like biological activity
Inventor:
Roshantha A. Chandraratna
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Jan 6, 1993
Inventor
Roshantha A. Chandraratna
Assignee (at issue)
Allergan, Inc.
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.