Patent US2679548A successfully refreshed from Google Patents.
US2679548A
Expired / Lapsed
US
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Electric dry cell
Assignee: Individual
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Filing: 1951-07-23
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Granted: 1954-05-25
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Expires: 1971-07-23
Abstract
No abstract record available.
Inventors
- 👤 Raag Nikolai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:12
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M6/00; H01M6/04; H01M6/06; H01M6/12; H01M6/42; H01M6/46; H01M6/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN ELECTROLYTIC DRY CELL COMPRISING A NEGATIVE ELECTRODE AND A POSITIVE ELECTRODE, A LAYER OF ELECTROLYTIC COMPOSITION AND A LAYER OF DEPOLARIZED DISPOSED BETWEEN SAID TWO ELECTRODES, AN ELECTROLYTE DISPERSED IN SAID LAYERS, SAID ELECTROLYTIC LAYER COMPRISING AN ELECTROLYTIC LAYER HAVING A HIGH POROSITY AND SAID ELECTROLYTIC LAYER COMMUNICATING WITH THE AMBIENT ATMOSPHERE AND BEING SUFFICIENTLY POROUS TO BE PENETRABLE FOR GASES AND ALSO BEING LIQUID ADSORBING TO ADSORB ELECTROLYTE FROM THE DEPOLARIZER, AN ANNULAR CASING OF INSULATING MATERIAL, SAID DEPOLARIZER AND SAID ELECTROLYTE CARRIER BEING PLACED IN SAID ANNULAR CASING OF INSULATING MATERIAL, SAID NEGATIVE ELECTRODE BEING FORMED BY A FLANGED COVER FOR SAID CASING, SAID POSITIVE ELECTRODE BEING FORMED BY A FLANGED FOIL, AND SAID FLANGED FOIL BEING COVERED BY A FLANGED CAP.
Claim 2
Dependent Claim
125 words
AN ELECTROLYTIC DRY CELL COMPRISING A NEGATIVE ELECTRODE AND A POSITIVE ELECTRODE, A LAYER OF ELECTROLYTIC COMPOSITION AND A LAYER OF DEPOLARIZED DISPOSED BETWEEN SAID TWO ELECTRODES, AN ELECTROLYTE DISPERSED IN SAID LAYERS, SAID ELECTROLYTIC LAYER COMPRISING AN ELECTROLYTIC LAYER HAVING A HIGH POROSITY AND SAID ELECTROLYTIC LAYER COMMUNICATING WITH THE AMBIENT ATMOSPHERE AND BEING SUFFICIENTLY POROUS TO BE PENETRABLE FOR GASES AND ALSO BEING LIQUID ADSORBING TO ADSORB ELECTROLYTE FROM THE DEPOLARIZER, AN ANNULAR CASING OF INSULATING MATERIAL, SAID DEPOLARIZER AND SAID ELECTROLYTE CARRIER BEING PLACED IN SAID ANNULAR CASING OF INSULATING MATERIAL, SAID NEGATIVE ELECTRODE BEING FORMED BY A FLANGED COVER FOR SAID CASING, SAID POSITIVE ELECTRODE BEING FORMED BY A FLANGED FOIL, AND SAID FLANGED FOIL BEING COVERED BY A FLANGED CAP.
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) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |