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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.:

US 9453155 B1

PDFFull Text
Date of Patent:
Sep. 27, 2016

Filed:

Mar. 12, 2013

Graphite film and graphite composite film

Applicant:

Kaneka Corporation, Osaka-Shi, JP;

Inventors:

Yusuke Ohta, Settsu, JP;

Shuhei Wakahara, Takatsuki, JP;

Yasushi Nishikawa, Osaka, JP;

Assignee:

Kaneka Corporation, Osaka-Shi, JP;

Attorney:

Marshall, Gerstein & Borun LLP

Primary Examiner:

Daniel C McCracken

Int. Cl.
CPC ...
C09K 5/14 (2006.01); C01B 31/04 (2006.01); H01L 23/373 (2006.01); H05K 7/20 (2006.01); B32B 5/18 (2006.01); B32B 7/12 (2006.01); B32B 9/00 (2006.01); B32B 9/04 (2006.01); B32B 27/06 (2006.01); B32B 27/28 (2006.01);
U.S. Cl.
CPC ...
C09K 5/14 (2013.01); B32B 5/18 (2013.01); B32B 7/12 (2013.01); B32B 9/007 (2013.01); B32B 9/045 (2013.01); B32B 27/065 (2013.01); B32B 27/281 (2013.01); C01B 31/04 (2013.01); H01L 23/373 (2013.01); H01L 23/3737 (2013.01); H05K 7/20481 (2013.01); B32B 2307/302 (2013.01); B32B 2307/306 (2013.01); B32B 2307/54 (2013.01); B32B 2307/714 (2013.01); B32B 2457/00 (2013.01); H01L 2924/0002 (2013.01); Y10T 428/24446 (2015.01); Y10T 428/2918 (2015.01); Y10T 428/30 (2015.01);
Abstract

An object of the present invention is to provide a graphite film, and a graphite composite film both having an excellent thermal diffusivity which can sufficiently manage heat dissipation of electronic instruments, precision instruments and the like, along with an excellent flex resistance which can withstand application to bent portions. Means for Resolution of the present invention is a graphite film exhibiting the number of reciprocal foldings being 10,000 times or more as measured using a rectangular strip test piece having a width of 15 mm until the test piece breaks in a MIT folding endurance test under conditions of: a curvature radius R of the bending clamp being 2 mm; a left-and-right bending angle being 135°; a bending rate being 90 times/min; and a load being 0.98 N.

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