Granted Patent
Utility
US 5,595,827 · App. 08/463,674
Polypropylene resin composition and the use of the same
Inventors:
Masaya Yamada, Michio Toriumi, Tetsunori Shinozaki, Mamoru Kioka
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Jun 5, 1995
Inventors
Masaya Yamada
Michio Toriumi
Tetsunori Shinozaki
Mamoru Kioka
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.