Granted Patent
Utility
US 5,082,893 · App. 07/405,300
Polyolefin resin compositions and applications thereof
Inventors:
Tadashi Asanuma, Kazuhiko Yamamoto, Mitsuru Ito, Kaoru Kawanishi
Patented Case
View Patent ↗
Granted: Jan 21, 1992
Filed: Sep 11, 1989
Inventors
Tadashi Asanuma
Kazuhiko Yamamoto
Mitsuru Ito
Kaoru Kawanishi
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.