Granted Patent
Utility
US 4,288,637 · App. 06/143,474
Process for preparation of aromatic hydroperoxides
Inventors:
Fujihisa Matsunaga, Yoshiyuki Shinohara, Isamu Okubo, Takayuki Nakamura, Seiichi Tanaka
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Apr 24, 1980
Inventors
Fujihisa Matsunaga
Yoshiyuki Shinohara
Isamu Okubo
Takayuki Nakamura
Seiichi Tanaka
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.