Patent US4781734A successfully refreshed from Google Patents.
US4781734A
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US
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Non-porous hydrogen diffusion membrane and utilization thereof
Assignee: Forschungszentrum Jülich
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Filing: 1983-03-21
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Granted: 1988-11-01
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Expires: 2003-03-21
Abstract
Abstract A non-porous hydrogen diffusion membrane, and the utilization thereof for e separation of hydrogen from gas mixtures. The non-porous hydrogen diffusion membrane distinguishes itself in that it is constituted of TiNi or TiAg with an atom ratio of about 1:1. These titanium alloys presently contain about 45 to 55% of atoms of one or the other of the components and are utilized at temperatures in excess of 300° C. in the form of thin sheets of foils.
Inventors
- 👤 Friedrich Behr
- 👤 Bernd Kugler
- 👤 Michael Pietsch
- 👤 Walter Weirich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:06
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; C01B3/0084; C01B3/508; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/047; C01B2203/0475; C01B2203/0495; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
A method for the separation of hydrogen from gas mixtures containing hydrogen comprising contacting the primary side of a non-porous hydrogen diffusion membrane with said gas mixture, said membrane being formed of TiAg and having a titanium component of from about 45 to 55% of atoms, said separation being conducted at about 600° C. in a hydrogen partial pressure range of about 10 torr.
Claim 2
Independent Claim
64 words
A method for the separation of hydrogen from gas mixtures containing hydrogen comprising contacting the primary side of a non-porous hydrogen diffusion membrane with said gas mixture, said membrane being formed of TiAg and having a titanium component of from about 45 to 55% of atoms, said separation being conducted at about 600° C. in a hydrogen partial pressure range of about 10 torr.
Claim 3
Dependent Claim
52 words
Apparatus for the separation of hydrogen from a gas mixture containing hydrogen comprising a first chamber and a second chamber, said first chamber and said second chamber being separated by a membrane, said membrane being formed of TiAg and having a titanium component of from about 45 to about 55% of atoms.
Claim 4
Dependent Claim
52 words
Apparatus for the separation of hydrogen from a gas mixture containing hydrogen comprising a first chamber and a second chamber, said first chamber and said second chamber being separated by a membrane, said membrane being formed of TiAg and having a titanium component of from about 45 to about 55% of atoms.
Claim 5
Dependent Claim
22 words
Non-porous hydrogen diffusion membrane, said membrane being formed of TiAg, and having a titanium component of about 45 to 55% to atoms.
Claim 6
Dependent Claim
22 words
Non-porous hydrogen diffusion membrane, said membrane being formed of TiAg, and having a titanium component of about 45 to 55% to atoms.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |