Granted Patent
Utility
US 4,304,764 · App. 06/190,195
Protective active nitrides as additives to nonaqueous cathode materials
Inventor:
Ashok V. Joshi
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Sep 24, 1980
Inventor
Ashok V. Joshi
Assignee (at issue)
Rayovac Corporation
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.