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:
Sep. 06, 1983
Filed:
Mar. 27, 1981
Applicant:
Inventors:
Irwin C Lewis, Strongsville, OH (US);
Arthur W Moore, North Olmstead, OH (US);
Assignee:
Union Carbide Corporation, Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F / ; C10C / ;
U.S. Cl.
CPC ...
4234471 ; 208 22 ; 208 39 ; 208 40 ; 208 45 ; 264 292 ; 4234472 ; 4234474 ; 4234476 ;
Abstract
A process for producing a carbon fiber includes the steps of heat treating a selected precursor material under high pressure, thereafter solvent extracting the treated precursor material to obtain mesophase pitch, spinning the mesophase pitch into at least one pitch fiber, thermosetting the pitch fiber, and carbonizing the pitch fiber to obtain the carbon fiber.
Lewis, Irwin. (1983). Carbon fiber production using high pressure treatment of a precursor (U.S. Patent No. 4402928). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4402928
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile