Granted Patent
Utility
US 5,266,583 · App. 07/940,253
Angitotensin II antagonist
Inventor:
Masakatsu Ohtawa
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Sep 1, 1992
Inventor
Masakatsu Ohtawa
Assignee (at issue)
MERCK & CO., 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.