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. 05, 2021
Filed:
Nov. 06, 2019
Honda Motor Co., Ltd., Tokyo, JP;
Shunsuke Konishi, Tochigi, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
Provided are a method of forming a gas diffusion layer on carbon paper, the method being capable of balancing smoothness with air permeability and water drainage ability in the gas diffusion layer as an underlayer, as well as the carbon paper having the gas diffusion layer formed thereon used in fuel cells. The method of forming a gas diffusion layer (L) on carbon paper (CP) used in fuel cells includes the steps of: forming a water-repellent layer (L) on the surface of the carbon paper (CP), forming a crack (CR) in the water-repellent layer (L), and forming the gas diffusion layer (L) on the water-repellent layer (L) having the crack (CR) formed therein.