US4488906A
Expired / Lapsed
US
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Hydrogen storage metal material
Assignee: Nippon Steel Corp
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Filing: 1983-10-14
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Granted: 1984-12-18
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Expires: 2003-10-14
Abstract
Abstract A hydrogen absorbing and desorbing metal material which comprises elements belonging to the IIa-Va groups having the ability to form metal hydrides, and S at an atomic ratio of 0.004-0.04 in terms of one of the elements.
Inventors
- 👤 Hisashi Gondo
- 👤 Ryutaro Matsumoto
- 👤 Jiro Ohno
- 👤 Ryoichi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:32
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; C01B3/0036; C01B3/0047; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y02P; Y02P20/00; Y02P20/10; Y02P20/129; Y10; Y10S; Y10S420/00; Y10S420/90
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
34 words
A hydrogen storage alloy selected from the group consisting of a TiFe alloy and a TiFeMn alloy, said alloy containing S in an atomic ratio of 0.004-0.04 based on the Ti in said alloy.
Claim 2
Dependent Claim
34 words
A hydrogen storage alloy selected from the group consisting of a TiFe alloy and a TiFeMn alloy, said alloy containing S in an atomic ratio of 0.004-0.04 based on the Ti in said alloy.
Claim 3
Dependent Claim
14 words
The hydrogen storage alloy of claim 1, which is said TiFe alloy containing S.
Claim 4
Dependent Claim
14 words
The hydrogen storage alloy of claim 1, which is said TiFeMn alloy containing S.
Claim 5
Dependent Claim
28 words
The hydrogen storage alloy of claim 1, wherein the atomic ratio of Ti to Fe in said hydrogen storage alloy is greater than 0.85 and less than 1.20.
Claim 6
Dependent Claim
37 words
A hydrogen storage alloy which is a TiFe Mischmetal alloy having 0.05-1.5 weight % Mischmetal, said alloy containing S in an atomic ratio of 0.004-0.04 based on the sum of the Ti and Mischmetal in said alloy.
Claim 7
Dependent Claim
37 words
A hydrogen storage alloy which is a TiFe Mischmetal alloy having 0.05-1.5 weight % Mischmetal, said alloy containing S in an atomic ratio of 0.004-0.04 based on the sum of the Ti and Mischmetal in said alloy.
Claim 8
Dependent Claim
28 words
The hydrogen storage alloy of claim 5, wherein the atomic ratio of Ti to Fe in said hydrogen storage alloy is greater than 0.85 and less than 1.20.
References Cited (Backward Citations)
US4079523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |