US3242013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cell batteries with a pyrolusite depolarizing agent
Assignee: Knapsack AG
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Filing: 1962-08-17
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Granted: 1966-03-22
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Expires: 1982-08-17
Abstract
No abstract record available.
Inventors
- 👤 Mehne Artur
- 👤 Harnisch Heinz
- 👤 Rodis Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:07
CPC Classifications
C; C01; C01G; C01G45/00; C01G45/02; C01G45/024; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; C01P; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/40; C01P2006/80; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A DRY CELL BATTERY INCLUDING A DEPOLARIZING COMPOSITION COMPRISING A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF NATURAL PYROLUSITE, ELECTROLYTE PYROLUSITE, AND MIXTURES THEREOF, AND AN ARTIFICIAL PYROLUSITE HAVING A WATER CONTENT WITHIN THE RANGE OF ABOUT 15 TO 35% BY WEIGHT AND A BULK DENSITY WITHIN THE RANGE OF ABOUT 0.5 TO 0.25 G./CM.3.
Claim 2
Dependent Claim
55 words
A DRY CELL BATTERY INCLUDING A DEPOLARIZING COMPOSITION COMPRISING A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF NATURAL PYROLUSITE, ELECTROLYTE PYROLUSITE, AND MIXTURES THEREOF, AND AN ARTIFICIAL PYROLUSITE HAVING A WATER CONTENT WITHIN THE RANGE OF ABOUT 15 TO 35% BY WEIGHT AND A BULK DENSITY WITHIN THE RANGE OF ABOUT 0.5 TO 0.25 G./CM.3.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |