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. 16, 2000
Filed:
Feb. 24, 1998
Applicant:
Inventors:
Kazuhiro Sayama, Tsukuba, JP;
Hironori Arakawa, Tsukuba, JP;
Kiyomi Okabe, Tsukuba, JP;
Hitoshi Kusama, Tsukuba, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
205637 ; 205638 ; 20415715 ; 20415752 ;
Abstract
A process for the production of a hydrogen gas from water, wherein comprising an aqueous solution containing ferric ions is irradiated with a light while maintaining the aqueous solution in contact with a photocatalyst to convert the ferric ions into ferrous ions. The resulting aqueous solution containing the ferrous ions is electrolyzed to yield a hydrogen gas.