US2586426A
Expired / Lapsed
US
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Galvanic primary cell
Assignee: Kontrollinstrument AB
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Filing: 1948-02-03
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Granted: 1952-02-19
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Expires: 1968-02-03
Abstract
No abstract record available.
Inventors
- 👤 Grusell Anders Erik
- 👤 Sandmark Helge Olof Anders
- 👤 Hysing Erik Gustaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:05
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/52; B23Q1/522; H01M6/00; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A GALVANIC, PRIMARY, DRY CELL HAVING AS ITS POSITIVE ELECTRODE SUBSTANCE A DEPOLARIZING OXIDE OF A METAL IN SUBSTANTIALLY FINELY DIVIDED FORM, ZINC AS ITS NEGATIVE ELECTRODE SUBSTANCE, AND AN ELECTROLYTE BETWEEN THEM, AND IN ELECTRONICALLY-CONDUCTIVE CONTACT RESPECTIVELY WITH THEM, CHARACTERIZED BY THE FACT THAN FINELY POWDERED GRAPHITE IS DISPERSED THROUGHOUT THE POSITIVE ELECTRODE DEPOLARIZING OXIDE OF A METAL AND THE ZINC
Claim 2
Dependent Claim
62 words
A GALVANIC, PRIMARY, DRY CELL HAVING AS ITS POSITIVE ELECTRODE SUBSTANCE A DEPOLARIZING OXIDE OF A METAL IN SUBSTANTIALLY FINELY DIVIDED FORM, ZINC AS ITS NEGATIVE ELECTRODE SUBSTANCE, AND AN ELECTROLYTE BETWEEN THEM, AND IN ELECTRONICALLY-CONDUCTIVE CONTACT RESPECTIVELY WITH THEM, CHARACTERIZED BY THE FACT THAN FINELY POWDERED GRAPHITE IS DISPERSED THROUGHOUT THE POSITIVE ELECTRODE DEPOLARIZING OXIDE OF A METAL AND THE ZINC
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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |