Granted Patent
Utility
US 5,290,896 · App. 07/661,256
Ethylene/pentene-1 copolymer, and ethylene/pentene-1 copolymer composition
Inventors:
Mamoru Kioka, Tsuneo Yashiki, Takashi Ueda, Masaki Kohyama, Masaya Yamada, Seiichi Ikeyama, Yoshinori Akana, Kenji Iwata, Satoshi Matsumoto, Hideki Sakai
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Feb 27, 1991
Inventors
Mamoru Kioka
Tsuneo Yashiki
Takashi Ueda
Masaki Kohyama
Masaya Yamada
Seiichi Ikeyama
Yoshinori Akana
Kenji Iwata
Satoshi Matsumoto
Hideki Sakai
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.