Granted Patent
Utility
US 4,954,603 · App. 07/362,289
Epoxy resin
Inventors:
Toshimasa Takata, Kenichi Mizuno
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Jun 6, 1989
Inventors
Toshimasa Takata
Kenichi Mizuno
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.