Granted Patent
Utility
US 4,885,329 · App. 07/181,529
Polyimide resin compositions
Inventors:
Kaoru Tominaga, Kojiro Kan, Toshimasa Takata, Toru Tomoshige
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Apr 14, 1988
Inventors
Kaoru Tominaga
Kojiro Kan
Toshimasa Takata
Toru Tomoshige
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.