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.

Date of Patent:
Jul. 21, 1998

Filed:

Mar. 04, 1997
Applicant:
Inventors:

Kiyoshi Hirai, Kakogawa, JP;

Shinichi Yasui, Kako-gun, JP;

Hiroko Kobayashi, Kobe, JP;

Mamoru Nagao, Osaka, JP;

Takashi Sasaki, Miki, JP;

Akira Asari, Kobe, JP;

Hiroyuki Harada, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204254 ; 204255 ; 204257 ;
Abstract

An apparatus for producing hydrogen and oxygen having a pressure vessel surrounding a bipolar-type water electrolytic cell The electrolytic cell contains a plurality of joined solid electrolyte membrane units, and each solid electrolyte membrane unit contains a solid electrolyte membrane, porous conductors in contact with opposing surfaces of the solid electrolyte membrane, and bipolar-type electrode plates in contact with each porous conductor, wherein each electrode plate is capable of performing as an anode and a cathode. A gap is present between the interior of the pressure vessel and the exterior of the water electrolytic cell to form a water pressure regulating chamber, and water of a preselected pressure can be fed into the water pressure regulating chamber such that the pressure differential between the pressure inside the water electrolytic cell and the pressure inside the water pressure regulating chamber is maintained within the pressure differential tolerance range of the water electrolytic cell.


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