Granted Patent
Utility
US 4,476,104 · App. 06/476,639
Manganese dioxide and process for the production thereof
Inventor:
Geoffrey W. Mellors
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Mar 24, 1983
Inventor
Geoffrey W. Mellors
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.