Granted Patent
Utility
US 5,525,558 · App. 08/196,140
Process for producing carbon fiber reinforced carbon composite material, carbon fiber reinforced carbon composite material and sliding material
Inventors:
Kazuo Niwa, Toshihiro Fukagawa, Nobuyuki Oonishi, Takeo Matsui, Yutaka Kawamata, Hitoshi Seki
Patented Case
View Patent ↗
Granted: Jun 11, 1996
Filed: Mar 17, 1994
Inventors
Kazuo Niwa
Toshihiro Fukagawa
Nobuyuki Oonishi
Takeo Matsui
Yutaka Kawamata
Hitoshi Seki
Assignee (at issue)
MITSUBISHI CHEMICAL CORPORATION
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.