Granted Patent
Utility
US 4,246,253 · App. 05/947,120
MnO.sub.2 derived from LiMn.sub.2 O.sub.4
Inventor:
James C. Hunter
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Sep 29, 1978
Inventor
James C. Hunter
Assignee (at issue)
Union Carbide 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.