US4107406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum alloy for primary alkaline fuel cells and batteries
Assignee: United States Department of the Navy
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Filing: 1977-06-24
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Granted: 1978-08-15
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Expires: 1997-06-24
Abstract
Abstract A tin and mercury free aluminum alloy of specific composition for use as annode in fuel cells and electrochemical couples and particularly in a silver oxide-aluminum battery comprising high purity aluminum alloyed with gallium and magnesium in specified quantities. The aluminum in combination with the gallium provide desired unique electrochemical properties. The magnesium, when the anode material is suitably heat treated, increases the tensile modulus of the alloy.
Inventors
- 👤 James R. Moden
- 👤 George Perkons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:52
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/06; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/46; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
41 words
An anode for a primary electrochemical energy source consisting essentially of 0.001 to 0.072 percent by weight of gallium, 0.5 to 1.2 percent by weight of magnesium and the balance of aluminum having an initial purity of at least 99.997 percent.
Claim 2
Dependent Claim
41 words
An anode for a primary electrochemical energy source consisting essentially of 0.001 to 0.072 percent by weight of gallium, 0.5 to 1.2 percent by weight of magnesium and the balance of aluminum having an initial purity of at least 99.997 percent.
Claim 3
Dependent Claim
35 words
An anode for a primary electrochemcial energy source consisting essentially of 0.001 to 0.072 percent by weight of gallium, 0.5 to 1.2 percent by weight of magnesium and the balance of aluminum having incidental impurities.
Claim 4
Dependent Claim
35 words
An anode for a primary electrochemcial energy source consisting essentially of 0.001 to 0.072 percent by weight of gallium, 0.5 to 1.2 percent by weight of magnesium and the balance of aluminum having incidental impurities.
Claim 5
Dependent Claim
41 words
An anode for a primary electrochemcial energy source consisting essentially of 0.02 to 0.06 percent by weight of gallium 0.5 to 1.2 percent by weight of magnesium and the balance of aluminum having an initial purity of at least 99.997 percent.
Claim 6
Dependent Claim
41 words
An anode for a primary electrochemcial energy source consisting essentially of 0.02 to 0.06 percent by weight of gallium 0.5 to 1.2 percent by weight of magnesium and the balance of aluminum having an initial purity of at least 99.997 percent.
Claim 7
Dependent Claim
35 words
An anode for a primary electrochemical energy source consisting essentially of 0.02 to 0.06 percent by weight of gallium, 0.5 to 1.2 percent by weight of magnesium and the balance of aluminum having incidental impurities.
Claim 8
Dependent Claim
35 words
An anode for a primary electrochemical energy source consisting essentially of 0.02 to 0.06 percent by weight of gallium, 0.5 to 1.2 percent by weight of magnesium and the balance of aluminum having incidental impurities.
References Cited (Backward Citations)
US3393138A
Cited
US3189486A
Cited
US3317350A
Cited
US3240688A
Cited
US3379636A
Cited
US3513031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |