Granted Patent
Utility
US 5,728,775 · App. 08/759,961
Heat-resistant high-nitrile polymer compositions and process for preparing same
Inventors:
Hiroaki Narisawa, Masahiro Kaneko, Mitsuo Kawata, Syuichi Yamaguchi, Shinichi Asai, Makoto Someda
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Dec 3, 1996
Inventors
Hiroaki Narisawa
Masahiro Kaneko
Mitsuo Kawata
Syuichi Yamaguchi
Shinichi Asai
Makoto Someda
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.