Granted Patent
Utility
US 4,408,083 · App. 06/293,510
Method of treating hydroperoxide mixtures
Inventors:
Masakazu Toyoura, Koichi Shomura, Hirotoshi Tsuchida, Tadateru Murakami
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Aug 17, 1981
Inventors
Masakazu Toyoura
Koichi Shomura
Hirotoshi Tsuchida
Tadateru Murakami
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.