Granted Patent
Utility
US 5,206,438 · App. 07/601,424
Aromatic diamine compounds, bismaleimide compounds, thermosetting resin forming compositions therefrom, resins therefrom, and methods for their preparation
Inventors:
Keizaburo Yamaguchi, Tatsuhiro Urakami, Yoshimitsu Tanabe, Midori Yamazaki, Shoji Tamai, Norimasa Yamaya, Masahiro Ohta, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Oct 23, 1990
Inventors
Keizaburo Yamaguchi
Tatsuhiro Urakami
Yoshimitsu Tanabe
Midori Yamazaki
Shoji Tamai
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.