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:
Feb. 11, 1997
Filed:
Sep. 30, 1994
Applicant:
Inventors:
Iwao Yamamoto, Yokohama, JP;
Hiroyuki Aikyo, Yokohama, JP;
Akihiko Yoshiya, Yokohama, JP;
Kazuo Shirosaki, Sagamihara, JP;
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01F / ;
U.S. Cl.
CPC ...
4234472 ; 4234471 ;
Abstract
A pitch-type carbon fiber made from a pitch having 1 a glass transition temperature width of at most 40.degree.C. as measured by a differential scanning calorimeter, 2 a proportion of the optically anisotropic phase of at least 10% by volume, and 3 a quinoline-insoluble content of at most 5% by weight, as a spinning raw material pitch.
Yamamoto, Iwao. (1997). Pitch type carbon fibers and process for their production (U.S. Patent No. 5601794). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5601794
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile