Granted Patent
Utility
US 4,463,033 · App. 06/284,561
Process for production of coated super-hard alloy articles
Inventors:
Noribumi Kikuchi, Yasuo Suzuki, Taijiro Onishi, Fumio Washizu
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Jul 17, 1981
Inventors
Noribumi Kikuchi
Yasuo Suzuki
Taijiro Onishi
Fumio Washizu
Assignee (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha
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.