US4687650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of extracting hydrogen from a gas
Assignee: Air Products and Chemicals Inc
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Filing: 1986-02-26
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Granted: 1987-08-18
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Expires: 2006-02-26
Abstract
Abstract The method for extracting hydrogen from a gas stream containing hydrogen with or without other gases by a sorption-desorption process using as the hydrogen sorber a pellet bed of a porous, metallurgically bonded, heat-ballasted hydridable mixture comprising a major proportion of a heat-ballast material and a minor proportion of a hydridable metallic material.
Inventors
- 👤 Paul D. Goodell
- 👤 Ernest L. Huston
- 👤 Peter S. Rudman
- 👤 Gary D. Sandrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:51
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; C01B3/0047; C01B3/0057; C01B3/0078; C01B3/0084; C01B3/50; C01B3/508; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
61 words
A method for extracting hydrogen from a gas stream containing hydrogen with or without other gases by a sorption-desorption process using as the hydrogen sorber a bed of a porous, metallurgically bonded, heat-ballasted hydridable mixture in pellet form consisting of at least 60% by volume of a heat-ballast metal powder and not more than 40% by volume of a hydridable metal.
Claim 2
Independent Claim
61 words
A method for extracting hydrogen from a gas stream containing hydrogen with or without other gases by a sorption-desorption process using as the hydrogen sorber a bed of a porous, metallurgically bonded, heat-ballasted hydridable mixture in pellet form consisting of at least 60% by volume of a heat-ballast metal powder and not more than 40% by volume of a hydridable metal.
Claim 3
Dependent Claim
25 words
The method in accordance with claim 1 wherein said heat ballast material is a metal from the group consisting of nickel, copper, iron and aluminum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |