Granted Patent
Utility
US 4,739,098 · App. 06/910,096
Ethynylphenyl-containing retinoic acid derivatives
Inventor:
Roshantha A. Chandraratna
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Sep 22, 1986
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.