Granted Patent
Utility
US 5,579,913 · App. 08/464,061
Polypropylene resin composition and the use of the same
Inventors:
Masaya Yamada, Yasuo Futami, Tetsunori Shinozaki, Mamoru Kioka
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Jun 5, 1995
Inventors
Masaya Yamada
Yasuo Futami
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.