Granted Patent
Utility
US 4,987,207 · App. 07/351,470
Thermosetting resin compositions
Inventors:
Norimasa Yamaya, Masahiro Ohta, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: May 15, 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.