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:
May. 31, 2011
Filed:
Feb. 24, 2006
Koji Nakazawa, Shioya-gun, JP;
Masanori Okabe, Nerima-ku, JP;
Masato Kita, Tokorozawa, JP;
Kenji Taruya, Utsunomiya, JP;
Tadashi Ogasawara, Nishinomiya, JP;
Kazuomi Azuma, Kobe, JP;
Takashi Onishi, Nishinomiya, JP;
Koji Nakazawa, Shioya-gun, JP;
Masanori Okabe, Nerima-ku, JP;
Masato Kita, Tokorozawa, JP;
Kenji Taruya, Utsunomiya, JP;
Tadashi Ogasawara, Nishinomiya, JP;
Kazuomi Azuma, Kobe, JP;
Takashi Onishi, Nishinomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
OSAKA Titanium Technologies Co., Ltd., Hyogo, JP;
Abstract
A water electrolysis apparatus includes a plurality of unit cells. A membrane electrode assembly of the unit cell includes an anode side power feeding element and a cathode side power feeding element stacked on an anode catalyst layer and a cathode catalyst layer on both surfaces of a solid polymer electrolyte membrane. A surface of the anode side power feeding element is subjected to a grinding process, and then, subjected to an etching process to form a smooth surface.