Granted Patent
Utility
US 5,410,084 · App. 08/253,267
Aromatic diamine and polyimide, and preparation process of same
Inventors:
Mitsunori Matsuo, Tsutomu Ishida, Keizaburo Yamaguchi, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Jun 2, 1994
Inventors
Mitsunori Matsuo
Tsutomu Ishida
Keizaburo Yamaguchi
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.