Granted Patent
Utility
US 5,223,556 · App. 07/948,413
Aromatic polyetherketone resin compositions containing polyetherimide, polysulfone-coated carbon fibers and mechanical component formed therefrom
Inventors:
Yoshihisa Gotoh, Toshihiko Tsutsumi, Toshiaki Takahashi, Takatoshi Sagawa
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Sep 22, 1992
Inventors
Yoshihisa Gotoh
Toshihiko Tsutsumi
Toshiaki Takahashi
Takatoshi Sagawa
Assignees (at issue)
Mitsui Toatsu Chemicals, Incorporated
Nissan Motor Co., Ltd.
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.