Granted Patent
Utility
US 6,171,696 · App. 09/316,246
Method for producing carbon fiber, carbon fiber, prepreg, and molded article from fiber-reinforced composite material
Inventors:
Shinichi Takemura, Yoshio Soda, Hideyuki Ohno, Yutaka Arai, Tomohiro Nakanishi
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: May 21, 1999
Inventors
Shinichi Takemura
Yoshio Soda
Hideyuki Ohno
Yutaka Arai
Tomohiro Nakanishi
Assignees (at issue)
Nippon Mitsubishi Oil Corp
NIPPON STEEL CORPORATION
Nippon Graphite Fiber 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.