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:
Oct. 29, 2019
Filed:
Dec. 16, 2016
Toray Industries, Inc., Tokyo, JP;
Yasuaki Tanimura, Otsu, JP;
Masamichi Utsunomiya, Otsu, JP;
Michio Wakatabe, Otsu, JP;
Toshiya Kamae, Ehime, JP;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
A gas diffusion electrode has a microporous layer on at least one surface of an electroconductive porous substrate. The microporous layer has a first microporous layer in contact with the electroconductive porous substrate, and a dense layer in contact with the first microporous layer. The thickness of the dense layer is at least 1 μm. The average number density B of pores having a pore diameter of 0.15-1 μm in the dense layer is at least 1.3A, where A is the average number density of pores having a pore diameter of 0.15-1 μm in the microporous layer disposed on at least one surface of the electroconductive porous substrate.