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:
Dec. 29, 2009
Filed:
Jul. 02, 2008
Hidekazu Yoshikawa, Shizuoka, JP;
Taro Oyama, Shizuoka, JP;
Takaya Suzuki, Shizuoka, JP;
Harumitsu Enomoto, Shizuoka, JP;
Hidekazu Yoshikawa, Shizuoka, JP;
Taro Oyama, Shizuoka, JP;
Takaya Suzuki, Shizuoka, JP;
Harumitsu Enomoto, Shizuoka, JP;
Toho Tenax Co., Ltd., Tokyo, JP;
Abstract
According to the present invention, there is disclosed a carbon fiber having a strand tensile strength of 6,100 MPa or more, a strand tensile modulus of 340 GPa or more and a density of 1.76 g/cmor more and possessing, on the surface, striations oriented in a direction parallel to the fiber axis, wherein the distance between striations in a 2×2 μm area of the carbon fiber surface when observed by a scanning probe microscope is 0.1 to 0.3 μm, the root mean square surface roughness Rms (5 μm) in a 5×5 μm area of the carbon fiber surface when observed by a scanning probe microscope is 20 to 40 nm, and the root mean square surface roughness Rms (0.5 μm) when measured in a 0.5×0.5 μm area is 2 to 12 nm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile