Granted Patent
Utility
US 4,356,028 · App. 06/295,250
In situ phosphorus addition to tantalum
Inventor:
Victor T. Bates
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Aug 24, 1981
Inventor
Victor T. Bates
Assignee (at issue)
Fansteel Inc.
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.