Granted Patent
Utility
US 5,380,820 · App. 08/143,045
Polyimides, process for the preparation thereof and polyimide resin compositions
Inventors:
Masahiro Ohta, Masao Yoshikawa
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Dec 7, 1993
Inventors
Masahiro Ohta
Masao Yoshikawa
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.