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. 09, 1990
Filed:
Jun. 03, 1988
Yoshinori Suto, Ibarakiken, JP;
Toshiyuki Ito, Ibarakiken, JP;
Hideyuki Nakajima, Ibarakiken, JP;
Yoshiyuki Suzuki, Ibarakiken, JP;
Shin-ichi Nayuki, Ibarakiken, JP;
Hiroyasu Ogawa, Shizuokaken, JP;
Harumitsu Enomoto, Shizuokaken, JP;
Petoca Ltd., Tokyo, JP;
Abstract
A method for producing high strength, high modulus carbon fibers having a modulus of elasticity of 75 tonf/mm.sup.2 or more and a tensile strength of 250 kgf/mm.sup.2 or more is provided. This method comprises graphitizing mesophase-pitch-based carbon fibers at a temperature of 2600.degree. C. or more for several seconds or for several minutes while stretching said fibers with a stretching ratio which satisifies specified relations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile