Patent US2612535A successfully refreshed from Google Patents.
US2612535A
Expired / Lapsed
US
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Primary cell
Assignee: Burgess Battery Co
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Filing: 1951-04-24
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Granted: 1952-09-30
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Expires: 1971-04-24
Abstract
No abstract record available.
Inventors
- 👤 Ivan C Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:53
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/14; H01M6/16; H01M6/162; H01M6/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN A PRIMARY CELL HAVING A POSITIVE ELECTRODE AND A MAGNESIUM NEGATIVE ELECTRODE, AN ELECTROLYTE IN CONTACT WITH SAID ELECTRODES HAVING A SOLVENT COMPONENT COMPRISING A MIXTURE OF WATER AND METHANOL, AND A COMPOUND IN ACCESS RELATION WITH SAID ELECTROLYTE FROM THE GROUP CONSISTING OF CHROMIC ACID AND THE SALTS OF CHROMIC
Claim 2
Dependent Claim
52 words
IN A PRIMARY CELL HAVING A POSITIVE ELECTRODE AND A MAGNESIUM NEGATIVE ELECTRODE, AN ELECTROLYTE IN CONTACT WITH SAID ELECTRODES HAVING A SOLVENT COMPONENT COMPRISING A MIXTURE OF WATER AND METHANOL, AND A COMPOUND IN ACCESS RELATION WITH SAID ELECTROLYTE FROM THE GROUP CONSISTING OF CHROMIC ACID AND THE SALTS OF CHROMIC
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) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |