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:
Dec. 23, 2008

Filed:

Feb. 17, 2005
Applicants:

Kiyoshi Aoki, Hokkaido, JP;

Takeshi Matsuda, Hokkaido, JP;

Kazuhiro Ishikawa, Hokkaido, JP;

Inventors:

Kiyoshi Aoki, Hokkaido, JP;

Takeshi Matsuda, Hokkaido, JP;

Kazuhiro Ishikawa, Hokkaido, JP;

Assignees:

ULVAC Inc., Kanagawa, JP;

Kiyoshi AOKI, Hokkaido, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 71/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

An Ni—Ti—Nb based multiple phase alloy consists of a combined phase which comprises a phase for the hydrogen permeability and a phase for the resistance to hydrogen embrittlement. The alloy has a composition satisfying the formula: NiTiNbin which x=25˜45 mol % and y=25˜55 mol %. A metal membrane for hydrogen separation-purification is prepared using the alloy material. The alloy material is prepared by blending Ni, Ti and Nb and melting the blend. The metal membrane permits the hydrogen separation-purification and thus the resulting purified hydrogen gas can be used as a fuel and can be applied to fields of production of semiconductors.


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