Patent US4041219A successfully refreshed from Google Patents.
US4041219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver peroxide-zinc battery
Assignee: Citizen Watch Co Ltd
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Filing: 1976-03-05
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Granted: 1977-08-09
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Expires: 1996-03-05
Abstract
Abstract A silver peroxide-zinc battery having a positive active material composed of silver peroxide, a negative active material composed of zinc, and an electrolyte comprising an aqueous alkaline hydroxide solution, in which an oxide of manganese is added to the silver peroxide.
Inventors
- 👤 Hajime Nishimura
- 👤 Yasushi Nomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:55
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/54; H01M50/00; H01M50/40; H01M6/00; H01M6/04; H01M6/06; H01M6/12; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
35 words
A silver peroxide-zinc battery comprising a positive active material, zinc as a negative active material, and an electrolyte, said positive active material consisting essentially of silver peroxide and a proportion of an oxide of manganese.
Claim 2
Dependent Claim
35 words
A silver peroxide-zinc battery comprising a positive active material, zinc as a negative active material, and an electrolyte, said positive active material consisting essentially of silver peroxide and a proportion of an oxide of manganese.
Claim 3
Dependent Claim
27 words
A battery according to claim 1, in which the oxide of manganese content of said positive active material is from about 0.3 to about 10% by weight.
Claim 4
Dependent Claim
16 words
A battery according to claim 1, in which said oxide of manganese is a manganese dioxide.
Claim 5
Dependent Claim
16 words
A battery according to claim 1, in which said electrolyte comprises an aqueous alkaline hydroxide solution.
Claim 6
Dependent Claim
22 words
A battery according to claim 1, in which said electrolyte comprises a mixture of an aqueous solution of potassium- and sodium hydroxides.
Claim 7
Dependent Claim
24 words
A battery according to claim 4, in which said negative active material is gelled with said alkaline hydroxide solution to form a single layer.
Claim 8
Dependent Claim
21 words
A battery according to claim 1, further comprising barrier means disposed between said negative active material and said positive active material.
Claim 9
Dependent Claim
24 words
A battery according to claim 7, in which said barrier means comprises a first layer of polyvinyl alcohol, and a second layer of polypropylene.
Claim 10
Dependent Claim
33 words
A battery according to claim 8, in which said barrier means further comprises a third layer impregnated with an electrolyte solution, said third layer being disposed in contact with said positive active material.
Claim 11
Dependent Claim
54 words
A battery according to claim 1, further comprising a cap housing said negative active material, and a bottom cup housing said positive active material, said cap and said bottom cup having annular flanges arranged in parallel relationship, and said annular flange of said bottom cup being crimped inward during assembly to seal the battery.
Claim 12
Dependent Claim
19 words
A battery according to claim 3, wherein said manganese dioxide content is from 0.3% to about 8% by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |