Granted Patent
Utility
US 4,444,631 · App. 06/287,967
Electrochemical purification of chlor-alkali cell liquor
Inventors:
Tilak V. Bommaraju, Charles G. Rader
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Jul 29, 1981
Inventors
Tilak V. Bommaraju
Charles G. Rader
Assignee (at issue)
Occidental Chemical 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.