US3816178A
Expired / Lapsed
US
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Alkaline storage battery having zinc electrode
Assignee: Hitachi Ltd
•
Filing: 1971-04-13
•
Granted: 1974-06-11
•
Expires: 1991-04-13
Abstract
Abstract A zinc electrode containing both of calcium and lead is a most suitable negative electrode for an alkaline storage battery and has excellent charge-discharge characteristics.
Inventors
- 👤 H Takahashi
- 👤 T Ino
- 👤 Y Maki
- 👤 M Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:40
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
15 words
An alkaline storage battery according to claim 1, wherein said calcium compound is calcium hydroxide.
Claim 2
Dependent Claim
15 words
An alkaline storage battery according to claim 1, wherein said calcium compound is calcium oxide.
Claim 3
Dependent Claim
19 words
An alkaline storage battery according to claim 1, wherein said mixture includes about 0.1 to about 20 percent lead.
Claim 4
Dependent Claim
19 words
An alkaline storage battery according to claim 1, wherein said member includes about 0.1 to about 25 percent trileadtetroxide.
Claim 5
Dependent Claim
20 words
An alkaline storage battery according to claim 1, wherein said mixture includes about 1 to about 20 percent lead peroxide.
Claim 6
Dependent Claim
20 words
An alkaline storage battery according to claim 1, Wherein said mixture contains about 1 to about 10 percent lead hydroxide.
Claim 7
Dependent Claim
23 words
An alkaline storage battery according to claim 1, wherein said electrolyte solution is a 5 to 50 percent aqueous solution of potassium hydroxide.
Claim 8
Dependent Claim
23 words
An alkaline storage battery according to claim 1, wherein said mixture contains from 0.5 to 1.0 moles of at least one calcium compound.
Claim 9
Dependent Claim
28 words
An alkaline storage battery according to claim 1, wherein said mixture further includes a binder selected from the group consisting of polyvinyl alcohol, carboxymethyl cellulose and methyl cellulose.
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |