Granted Patent
Utility
US 5,028,641 · App. 07/388,638
Thermosetting resin composition
Inventors:
Norimasa Yamaya, Masahiro Ohta, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Jul 2, 1991
Filed: Aug 2, 1989
Inventors
Norimasa Yamaya
Masahiro Ohta
Akihiro Yamaguchi
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.