Granted Patent
Utility
US 5,494,996 · App. 08/277,568
Polyimide resin composition
Inventors:
Shoji Tamai, Yuichi Okawa, Wataru Yamashita, Yoshihiro Sakata, Hideaki Oikawa, Keizaburo Yamaguchi, Tadashi Asanuma, Akihiro Yamaguchi, Mitsunori Matsuo
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Jul 20, 1994
Inventors
Shoji Tamai
Yuichi Okawa
Wataru Yamashita
Yoshihiro Sakata
Hideaki Oikawa
Keizaburo Yamaguchi
Tadashi Asanuma
Akihiro Yamaguchi
Mitsunori Matsuo
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.