Granted Patent
Utility
US 4,444,642 · App. 06/293,382
Dimensionally stable coated electrode for electrolytic process, comprising protective oxide interface on valve metal base, and process for its manufacture
Inventors:
Jean M. Hinden, Henri B. Beer
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Aug 17, 1981
Inventors
Jean M. Hinden
Henri B. Beer
Assignee (at issue)
Diamond Shamrock 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.