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. 01, 2020
Filed:
Oct. 07, 2015
Toray Industries, Inc., Tokyo, JP;
Yasuaki Tanimura, Otsu, JP;
Takashi Chida, Otsu, JP;
Toru Sugahara, Otsu, JP;
Masamichi Utsunomiya, Otsu, JP;
Toshiya Kamae, Otsu, JP;
Katsuya Sode, Otsu, JP;
Takashi Ando, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A porous carbon sheet includes a carbon fiber and a binding material, wherein when in a measured surface depth distribution, a ratio of an area of a portion having a depth of 20 μm or less in a measured area of one surface is a surface layer area ratio X, and a ratio of an area of a portion having a depth of 20 μm or less in a measured area of another surface is a surface layer area ratio Y, the surface layer area ratio X is larger than the surface layer area ratio Y, and a difference between the surface layer area ratios is 3% or more and 12% or less.