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:
Aug. 16, 2011

Filed:

May. 07, 2008
Applicants:

Tomohiro Akiyama, Sendai, JP;

Kouwa Cho, Sapporo, JP;

Masahito Satoh, Sapporo, JP;

Haruya Hayashi, Sapporo, JP;

Taketo Hiraki, Sapporo, JP;

Itoko Saita, Sapporo, JP;

Hiroshi Uesugi, Sapporo, JP;

Inventors:

Tomohiro Akiyama, Sendai, JP;

Kouwa Cho, Sapporo, JP;

Masahito Satoh, Sapporo, JP;

Haruya Hayashi, Sapporo, JP;

Taketo Hiraki, Sapporo, JP;

Itoko Saita, Sapporo, JP;

Hiroshi Uesugi, Sapporo, JP;

Assignees:

Bio Coke Lab. Co. Ltd., Yokohama-Shi, JP;

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 6/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

A first heat treatment is carried out in which a material powder comprising magnesium is kept in the atmosphere of hydrogen gas and the temperature and pressure in the atmosphere of hydrogen gas are maintained in the temperature-pressure region in which single Mg and Hcoexist in a thermodynamically stable state, whereby the coating on the surface of the material powder is removed. Next, a second heat treatment is carried out in which the temperature and pressure in the atmosphere of hydrogen gas are changed and maintained in the temperature-pressure region in which MgHexists in a thermodynamically stable state. Hence, Mg from which the coating is removed reacts promptly with H, and MgHis produced at high yield. Magnesium-based hydrides containing high purity MgHcan thus be obtained by supplying energy less than that required for the related art that requires an activation treatment.


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Akiyama, Tomohiro. (2011). Method of producing magnesium-based hydrides and apparatus for producing magnesium-based hydrides (U.S. Patent No. 7998454). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7998454

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