Granted Patent
Utility
US 5,296,478 · App. 07/957,152
1-substituted oxindoles as cognition enhancers
Inventor:
Christopher A. Teleha
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Oct 7, 1992
Inventor
Christopher A. Teleha
Assignee (at issue)
The DuPont Merck Pharmaceutical Company
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.