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:
Nov. 02, 2004
Filed:
Jul. 24, 2002
Kenji Shimazaki, Shizuoka, JP;
Shintaro Tanaka, Shizuoka, JP;
Toho Tenax Co., Ltd., Tokyo, JP;
Abstract
A process for producing a carbon fiber sheet, which comprises allowing, as necessary, an oxidized polyacrylonitrile fiber sheet to contain 0.2 to 5% by mass of a resin, then subjecting the resin-containing oxidized polyacrylonitrile fiber sheet to a compression treatment in the thickness direction under the conditions of 150 to 300° C. and 5 to 100 MPa (10 to 100 MPa when no resin treatment is made) to obtain a compressed, oxidized fiber sheet having a bulk density of 0.40 to 0.80 g/cm and a compression ratio of 40 to 75%, and thereafter subjecting the compressed, oxidized fiber sheet to a carbonizing treatment, which carbon fiber sheet has a thickness of 0.15 to 1.0 mm, a bulk density of 0.15 to 0.45 g/cm , a carbon fiber content of 95% by mass or more, a compression deformation ratio of 10 to 35%, an electric resistance of 6 m&OHgr; or less and a feeling of 5 to 70 g.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile