Granted Patent
Utility
US 4,985,478 · App. 07/250,613
Thermosetting resin composition
Inventors:
Masao Kameyama, Shigeyuki Kumagawa
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Sep 29, 1988
Inventors
Masao Kameyama
Shigeyuki Kumagawa
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.