Granted Patent
Utility
US 6,322,912 · App. 09/396,615
Electrolytic capacitor anode of valve metal oxide
Inventor:
James A. Fife
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: Sep 15, 1999
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.