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US4161402A
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Nickel-mischmetal-calcium alloys for hydrogen storage
Assignee: ERGENICS Inc A NJ CORP
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Filing: 1977-11-02
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Granted: 1979-07-17
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Expires: 1997-11-02
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 D. Sandrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:42
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: 12
Claim 1
Independent Claim
35 words
An alloy for hydrogen storage consisting essentially of, in weight percent, from about 4% to about 27% mischmetal, from about 2% to about 11% calcium, up to about 17.3% copper, and the balance essentially nickel.
Claim 2
Dependent Claim
35 words
An alloy for hydrogen storage consisting essentially of, in weight percent, from about 4% to about 27% mischmetal, from about 2% to about 11% calcium, up to about 17.3% copper, and the balance essentially nickel.
Claim 3
Dependent Claim
30 words
An alloy for hydrogen storage as defined in claim 1 containing from about 6% to about 15% mischmetal, from about 6% to about 10% calcium, and the balance essentially nickel.
Claim 4
Dependent Claim
22 words
An alloy for hydrogen storage as defined in claim 2 containing about 12% mischmetal, about 8% calcium, and the balance essentially nickel.
Claim 5
Dependent Claim
27 words
A composition for hydrogen storage having the formula Ni 5 M 1-y Ca y , where M represents mischmetal and y is from 0.2 to about 0.9.
Claim 6
Dependent Claim
27 words
A composition for hydrogen storage having the formula Ni 5 M 1-y Ca y , where M represents mischmetal and y is from 0.2 to about 0.9.
Claim 7
Dependent Claim
13 words
A composition for hydrogen storage as defined in claim 4, wherein y= 0.2.
Claim 8
Dependent Claim
13 words
A composition for hydrogen storage as defined in claim 4, wherein y= 0.5.
Claim 9
Dependent Claim
13 words
A composition for hydrogen storage as defined in claim 4, wherein y= 0.7.
Claim 10
Dependent Claim
13 words
A composition for hydrogen storage as defined in claim 4, wherein y= 0.8.
Claim 11
Dependent Claim
13 words
A composition for hydrogen storage as defined in claim 4, wherein y= 0.9.
Claim 12
Dependent Claim
28 words
A composition for hydrogen storage as defined in claim 4, wherein nickel is partly substituted for by copper in the atomic ratio of Ni:Cu== 4:1 and y= 0.7.
References Cited (Backward Citations)
GB1320093A
Cited
US3967465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-16 | 1983-01-15 | 1983-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-16 | 1987-01-15 | 1987-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-16 | 1991-01-15 | 1991-07-17 | $7700.00 | Window Closed / Lapsed |