Granted Patent
Utility
US 4,831,102 · App. 07/071,161
Thermosetting resin composition from poly-arylene-oxy-bis-maleimide and polyarylene diamine
Inventors:
Norimasa Yamaya, Nobuhito Koga, Masahiro Ohta, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Jul 8, 1987
Inventors
Norimasa Yamaya
Nobuhito Koga
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.