Granted Patent
Utility
US 4,445,996 · App. 06/390,988
Anode paste for use in Soderberg-type electrolytic furnace for aluminum
Inventors:
Yutaka Kawamata, Shunkichi Katsuki
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Jun 22, 1982
Inventors
Yutaka Kawamata
Shunkichi Katsuki
Assignee (at issue)
Mitsubishi Light Metal Industries Limited
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.