Granted Patent
Utility
US 4,070,504 · App. 05/635,879
Method of producing a valve metal electrode with valve metal oxide semi-conductor face and methods of manufacture and use
Inventors:
Giuseppe Bianchi, Vittorio de Nora, Patrizio Gallone, Antonio Nidola
Patented Case
View Patent ↗
Granted: Jan 24, 1978
Filed: Nov 28, 1975
Inventors
Giuseppe Bianchi
Vittorio de Nora
Patrizio Gallone
Antonio Nidola
Assignee (at issue)
Diamond Shamrock Technologies S.A.
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.