Granted Patent
Utility
US 5,405,978 · App. 08/158,174
Oxidative preparation of 3,5-secoandrost-5-one-3,17 .beta.-dioic acid
Inventor:
Paul Herrinton
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Nov 24, 1993
Inventor
Paul Herrinton
Assignee (at issue)
The Upjohn Co.
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.