Patent US2808230A successfully refreshed from Google Patents.
Patent US2607809A successfully refreshed from Google Patents.
US2607809A
Expired / Lapsed
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Dry cell assembly
Assignee: Individual
•
Filing: 1949-01-11
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Granted: 1952-08-19
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Expires: 1969-01-11
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Pitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A VOLTAIC DRY CELL COMPRISING AN INERT ANODE, A ZINC CATHODE, A LAYER OF A DEPOLARIZING PASTE CONSISTING ESSNETIALLY OF MANGANESE DIOXIDE AND A SATURATED AMMONIUM CHLORIDE SOLUTION AMBIENT TO SAID ANODE, A LAYER OF RESIN PASTE IN CONTACT WITH SAID CATHODE, SAID PASTE CONSISTING OF A RESIN AND SATURATED AMMONIUM CHLORIDE SOLUTION, SAID RESIN BEING IN ACID FORM AND SELECTED FROM THE GROUP CONSISTING OF SULPHONATED PETROLEUM COKE, GREENSAND, SYNTHETIC INORGANIC ZEOLITES, AROMATIC
Claim 2
Dependent Claim
74 words
A VOLTAIC DRY CELL COMPRISING AN INERT ANODE, A ZINC CATHODE, A LAYER OF A DEPOLARIZING PASTE CONSISTING ESSNETIALLY OF MANGANESE DIOXIDE AND A SATURATED AMMONIUM CHLORIDE SOLUTION AMBIENT TO SAID ANODE, A LAYER OF RESIN PASTE IN CONTACT WITH SAID CATHODE, SAID PASTE CONSISTING OF A RESIN AND SATURATED AMMONIUM CHLORIDE SOLUTION, SAID RESIN BEING IN ACID FORM AND SELECTED FROM THE GROUP CONSISTING OF SULPHONATED PETROLEUM COKE, GREENSAND, SYNTHETIC INORGANIC ZEOLITES, AROMATIC
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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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |