Granted Patent
Utility
US 4,969,982 · App. 06/941,831
Method for producing an alkali metal hydroxide and electrolytic cell useful for the method
Inventors:
Haruhisa Miyake, Isamu Kaneko, Atsushi Watakabe
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Dec 15, 1986
Inventors
Haruhisa Miyake
Isamu Kaneko
Atsushi Watakabe
Assignee (at issue)
ASAHI GLASS CO., LTD.
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.