Granted Patent
Utility
US 6,051,326 · App. 08/845,736
Valve metal compositions and method
Inventor:
James A. Fife
Patented Case
View Patent ↗
Granted: Apr 18, 2000
Filed: Apr 26, 1997
Inventor
James A. Fife
Assignee (at issue)
Cabot 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.