Granted Patent
Utility
US 5,972,197 · App. 08/973,756
Method for producing polysulfides by electrolytic oxidation
Inventors:
Tatsuya Andoh, Tetsuji Shimohira, Eiji Endoh
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Dec 23, 1997
Inventors
Tatsuya Andoh
Tetsuji Shimohira
Eiji Endoh
Assignees (at issue)
ASAHI GLASS CO., LTD.
Kawasaki Kasei Chemicals 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.