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:
Apr. 08, 1980
Filed:
Aug. 17, 1978
Applicant:
Inventors:
Kazuhisa Saito, Mishima, JP;
Yasuo Kogo, Shizuoka, JP;
Assignee:
Toho Beslon Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
D01F / ;
U.S. Cl.
CPC ...
423265 ; 106307 ; 264 292 ; 423275 ; 4234471 ; 4234475 ;
Abstract
An acrylic carbon fiber with excellent thermal oxidation resistance, which contains 50 ppm or more of a phosphorus component (as phosphorus) and/or a boron component (as boron) and which contains 100 ppm or more of a zinc component (as zinc) and/or a calcium component (as calcium), and which suffers a fiber weight reduction of about 20% or less upon standing for 3 hours in air at 500.degree. C.