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:
Dec. 28, 2004
Filed:
Sep. 27, 2001
Masuo Okada, Sendai, JP;
Takahiro Kuriiwa, Utsunomiya, JP;
Tohoku Techno Arch Co., Ltd., , JP;
Abstract
A method for absorbing and releasing hydrogen comprises applying repeatedly hydrogen pressurization and depressurization to a hydrogen storage metal alloy of a body-centered cubic structure-type phase exerting a two-stage or inclined plateau characteristic in a hydrogen storage amount vs hydrogen pressure relation in an appropriate fashion to absorb and release hydrogen. At least at one stage during the release of hydrogen, the temperature (T ) of the above-mentioned hydrogen storage metal alloy is made higher than the temperature (T ) of the hydrogen storage metal alloy during the hydrogen absorption process (T >T ). This enables the release and utilization of occluded hydrogen at a low-pressure plateau region or an inclined plateau lower region.