Granted Patent
Utility
US 5,508,377 · App. 08/357,193
Polyimide
Inventors:
Wataru Yamashita, Yuichi Okawa, Shoji Tamai, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Dec 13, 1994
Inventors
Wataru Yamashita
Yuichi Okawa
Shoji Tamai
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.