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Patent US4096639A successfully refreshed from Google Patents.
US4096639A
Expired / Lapsed
US
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Nickel-mischmetal-calcium alloys for hydrogen storage
Assignee: ERGENICS Inc A NJ CORP
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Filing: 1976-11-08
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Granted: 1978-06-27
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Expires: 1996-11-08
Abstract
Abstract A nickel-mischmetal-calcium compound is used to store gaseous hydrogen at pressures up to about 15 atmospheres at ambient temperatures. The Ni 5 M 1-y Ca y compounds have values of y ranging from about 0.2 to about 0.9. Alloys conforming to this formula contain from about 4% to about 27% mischmetal, from about 2% to about 11% calcium, up to about 15% copper, and the balance essentially nickel.
Inventors
- 👤 Gary Dale Sandrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:25
CPC Classifications
F; F17; F17C; F17C11/00; F17C11/005; C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; C01B3/0047; C01B3/0057; C22; C22C; C22C19/00; C22C19/03; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y10; Y10S; Y10S420/00; Y10S420/90
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
49 words
A method for storing hydrogen at pressures ranging from about 1 atmosphere to about 15 atmospheres comprising, contacting a hydrogen containing gas with a granulated Ni 5 M 1-y Ca y compound at an ambient temperature, where M represents mischmetal and y is from about 0.2 to about 0.9.
Claim 2
Independent Claim
49 words
A method for storing hydrogen at pressures ranging from about 1 atmosphere to about 15 atmospheres comprising, contacting a hydrogen containing gas with a granulated Ni 5 M 1-y Ca y compound at an ambient temperature, where M represents mischmetal and y is from about 0.2 to about 0.9.
Claim 3
Dependent Claim
32 words
A method for storing hydrogen as defined in claim 1 wherein a hydrogen desorption pressure (P) is a function of said compound formula according to a relationship P = 28.5 exp. (-2.9y).
References Cited (Backward Citations)
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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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |