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:
Mar. 25, 1986
Filed:
Aug. 28, 1984
Applicant:
Inventors:
Kozo Yudate, Chiba, JP;
Ken Nagasawa, Chiba, JP;
Assignee:
Kawasaki Steel Corporation, Kobe, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10C / ; C10C / ; D01F / ;
U.S. Cl.
CPC ...
208 45 ; 208 44 ; 208 40 ; 4234471 ; 4234474 ;
Abstract
A precursor pitch suitable for production of carbon fiber which is excellent in thermal stability, spinnability, infusibility and is few in impurities, is produced by heating a coal tar pitch at a temperature of 350.degree.-500.degree. C. to form mesophase and extracting the thus heated pitch with a tar series light oil to obtain the precursor pitch.
Yudate, Kozo. (1986). Method for producing a precursor pitch for carbon fiber (U.S. Patent No. 4578177). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4578177
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile