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:
Aug. 10, 1999
Filed:
Apr. 25, 1997
Applicant:
Inventors:
Yoshio Sohda, Yokohama, JP;
Takefumi Kohno, Yokohama, JP;
Mitsuhiro Ishii, Yokohama, JP;
Masakazu Hiro, Yokohama, JP;
Assignee:
Nippon Oil Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; C01B / ;
U.S. Cl.
CPC ...
156 8926 ; 264 291 ; 264 293 ; 264 296 ;
Abstract
A carbonaceous preform, which is free from such drawbacks as delamination and is superior in formability and mass productivity, can be obtained by a process comprising the steps of fixing a laminate of stacked carbon fibers with a fixing jig in the absence of a binder, impregnating the thus-fixed laminate with a molten carbonaceous pitch, and carbonizing the impregnated laminate in a non-oxidative gas atmosphere.