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:
Jan. 21, 1986
Filed:
Dec. 21, 1984
Applicant:
Inventors:
Gary G Tibbetts, Birmingham, MI (US);
Michael G Devour, Detroit, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; D01F / ;
U.S. Cl.
CPC ...
4234473 ; 423448 ; 423458 ;
Abstract
In a preferred embodiment, graphite fibers are grown on a suitably nucleated ceramic surface by passing a methane gas stream over the surface at an elevated temperature. Initially, the methane concentration in the gas stream is adjusted to between 5 and 15 volume percent to form microscopic carbon filaments. Thereafter, the methane concentration is increased to above 25 volume percent to thicken the filaments into fibers.