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US3617384A
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Zinc alkaline secondary cell
Assignee: Maxell Ltd
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Filing: 1969-11-07
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Granted: 1971-11-02
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Expires: 1989-11-07
Abstract
Abstract Improved zinc-alkaline secondary cells are provided by distributing throughout a zinc amalgam anodic body a substance selected from the group consisting of gold, silver, tin, alloys thereof, gold and silver oxides and hydroxides and mixtures of said substances.
Inventors
- 👤 Toshiso Kamai
- 👤 Sumio Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:47
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/244; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
23 words
A cell as in claim 1 wherein the substance distributed throughout said anodic active body is gold, silver, tin alloys and mixtures thereof.
Claim 2
Dependent Claim
24 words
A cell as in claim 1 wherein the substance distributed throughout said anodic active body is gold and silver oxides, hydroxides and mixtures thereof.
Claim 3
Dependent Claim
109 words
In a zinc-alkaline secondary cell comprising in combination, a container, a cathode comprising an admixture of graphite and a member selected from the group consisting of manganese dioxide, mercury oxide, silver oxide and mixtures thereof, an anode, an alkaline electrolyte consisting essentially of an aqueous solution of an alkali metal hydroxide substantially saturated with zincate, and a separator interposed between said cathode and said anode, said anode the improvement wherein comprises as an anodic active body, amalgamated zinc and distributed throughout said anodic active body a substance selected from the group consisting of gold, silver, tin, alloys thereof, gold and silver oxides and hydroxides and mixtures of said substances.
Claim 4
Dependent Claim
23 words
A cell as in claim 4, wherein the substance distributed throughout said anodic active body is gold, silver, tin, alloys and mixtures thereof.
Claim 5
Dependent Claim
24 words
A cell as in claim 4, wherein the substance distributed throughout said anodic active body is gold and silver oxides, hydroxides and mixtures thereof.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |