US2715653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary cell
Assignee: Dow Chemical Co
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Filing: 1952-02-27
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Granted: 1955-08-16
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Expires: 1972-02-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:51
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; H01M6/00; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A PRIMARY CELL HAVING IN COMBINATION AN ANODE COMPRISINIG MAGNESIUM, A CATHODE COMPRISING A MIXTURE OF CARBON AND A DEPOLARIZER OF MANGANESE DIOXIDE, AND AN AQUEOUS ELECTROLYTE COMPRISING THE BROMIDE OF A BASE SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS, THE ALKALI EARTH METALS AND AMMONIUM, THE IMPROVEMENT WHICH CONSISTS IN INCLUDING IN THE SAID MIXTURE FROM 0.1 TO 1.5 PER CENT BY WEIGHT ON THE DRY BASIS OF A PARTICULATED METAL BELOW AND INCLUDING MAGNESIUM IN THE ELECTROMOTIVE FORCE SERIES OF METALS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, BISMUTH, COBALT, COPPER, IRON, LEAD, MAGNESIUM, MANGANESE, NICKEL, TIN, AND ZINC, SAID PARTICULATED METAL BEING IN PARTICLES SUBSTANTIALLY ALL PASSING THROUGH A NO.50 WHILE BEING RETAINED ON A NO.325 STANDARD SIEVE.
Claim 2
Dependent Claim
124 words
IN A PRIMARY CELL HAVING IN COMBINATION AN ANODE COMPRISINIG MAGNESIUM, A CATHODE COMPRISING A MIXTURE OF CARBON AND A DEPOLARIZER OF MANGANESE DIOXIDE, AND AN AQUEOUS ELECTROLYTE COMPRISING THE BROMIDE OF A BASE SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS, THE ALKALI EARTH METALS AND AMMONIUM, THE IMPROVEMENT WHICH CONSISTS IN INCLUDING IN THE SAID MIXTURE FROM 0.1 TO 1.5 PER CENT BY WEIGHT ON THE DRY BASIS OF A PARTICULATED METAL BELOW AND INCLUDING MAGNESIUM IN THE ELECTROMOTIVE FORCE SERIES OF METALS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, BISMUTH, COBALT, COPPER, IRON, LEAD, MAGNESIUM, MANGANESE, NICKEL, TIN, AND ZINC, SAID PARTICULATED METAL BEING IN PARTICLES SUBSTANTIALLY ALL PASSING THROUGH A NO.50 WHILE BEING RETAINED ON A NO.325 STANDARD SIEVE.
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) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |