Granted Patent
Utility
US 4,381,937 · App. 06/304,400
Method for producing cobalt metal powder
Inventors:
Richard G. W. Gingerich, Clarence D. Vanderpool, Richard A. Scheithauer, Martin B. MacInnis
Patented Case
View Patent ↗
Granted: May 3, 1983
Filed: Sep 21, 1981
Inventors
Richard G. W. Gingerich
Clarence D. Vanderpool
Richard A. Scheithauer
Martin B. MacInnis
Assignee (at issue)
GTE Products 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.