US4347082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mischmetal alloy for storage of hydrogen
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1980-10-01
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Granted: 1982-08-31
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Expires: 2000-10-01
Abstract
Abstract A Mischmetal alloy of the general formula: MmNi5-xCrx-yAy, wherein Mm stands for Mischmetal and A for Al, Co, Cu, Fe, Mn or Si, is highly useful as an alloy for the storage of hydrogen by occlusion.
Inventors
- 👤 Yasuaki Osumi
- 👤 Hiroshi Suzuki
- 👤 Akihiko Kato
- 👤 Masanori Nakane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:34
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; C01B3/0047; C01B3/0057; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y10; Y10S; Y10S420/00; Y10S420/90
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
85 words
A quaternary mischmetal alloy for storage of hydrogen, having a low flatness factor and represented by the general formula: MmNi.sub.5-x Cr.sub.x-y A.sub.y wherein, Mm denotes Mischmetal, A is one member selected from the group consisting of Al, Co, Cu, Fe, Mn and Si, x denotes a number of a value within the range of from 0.1 to 1, y is a number of a value within the range of from 0.01 to 0.99, provided that the value of x is greater than that of y.
Claim 2
Dependent Claim
85 words
A quaternary mischmetal alloy for storage of hydrogen, having a low flatness factor and represented by the general formula: MmNi.sub.5-x Cr.sub.x-y A.sub.y wherein, Mm denotes Mischmetal, A is one member selected from the group consisting of Al, Co, Cu, Fe, Mn and Si, x denotes a number of a value within the range of from 0.1 to 1, y is a number of a value within the range of from 0.01 to 0.99, provided that the value of x is greater than that of y.
Claim 3
Dependent Claim
67 words
The Mischmetal alloy for storage of hydrogen according to claim 1, wherein the Mischmetal comprises 25 to 35% by weight of lanthanum, 40 to 50% by weight of cerium, 1 to 15% by weight of praseodymium, 4 to 15% by weight of neodymium, 1 to 7% by weight of samarium+gadolinium and the balance to make up 100% by weight of elements entrained by the raw materials used.
References Cited (Backward Citations)
US4222770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |