The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 1991
Filed:
Jul. 18, 1989
Applicant:
Inventors:
Kohei Okuyama, Yokohama, JP;
Kazushi Matsuura, Yokohama, JP;
Assignee:
Mitsubishi Kasei Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428408 ; 427228 ; 428297 ; 4283044 ; 428367 ;
Abstract
A carbon fiber-reinforced carbon composite material having a porosity of not higher than 20% prepared by subjecting a carbon fiber-reinforced carbon composite material having a porosity of from 25 to 95% to densification treatment, wherein the densification treatment is conducted with pyrolytic carbon formed by the pyrolysis of a halogenated hydrocarbon-containing gas at a temperature of from 400.degree. to 800.degree. C.