Granted Patent
Utility
US 4,239,644 · App. 06/022,499
Liquid peroxide composition
Inventors:
Hirohiko Nambu, Kenichi Mizuno, Tetuhiro Matumoto
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Mar 21, 1979
Inventors
Hirohiko Nambu
Kenichi Mizuno
Tetuhiro Matumoto
Assignee (at issue)
Mitsui Petrochemical Industries, 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.