Granted Patent
Utility
US 5,109,100 · App. 07/443,253
Thermoplastic, liquid-crystalline, wholly aromatic polyimide ester and method of producing the same
Inventors:
Kenichi Fujiwara, Hideo Hayashi, Makoto Wakabayashi
Patented Case
View Patent ↗
Granted: Apr 28, 1992
Filed: Nov 30, 1989
Inventors
Kenichi Fujiwara
Hideo Hayashi
Makoto Wakabayashi
Assignee (at issue)
Idemitsu Petrochemical Co., 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.