Patent US1543752A successfully refreshed from Google Patents.
Patent US2642470A successfully refreshed from Google Patents.
US2642470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cell
Assignee: Olin Industries Inc
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Filing: 1951-06-07
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Granted: 1953-06-16
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Expires: 1971-06-07
Abstract
No abstract record available.
Inventors
- 👤 Reinhardt Otto Karl
- 👤 Jay Y Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:29
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A LEAK-RESISTANT DRY CELL COMPRISING A METAL CAN FORMING AN ANODE, A CATHODE AND A DEPOLARIZING MIX ARRANGED IN THE CAN, THE CATHODE PROJECTING FROM THE TOP OF THE CAN, A METAL DISC COVERING THE BOTTOM OF THE CAN, A JACKET SURROUNDING THE CAN HAVING ITS LOWER EDGE CRIMPED TO THE DISC, A WASHER ARRANGED IN THE CAN ABOVE THE DEPOLARIZING MIX, A LAYER OF MATERIAL CAPABLE OF BEING SOFTENED BY HEAT ON SAID WASHER, AND A CLOSURE MEMBER COMPRISING A DISC HAVING A CENTRAL OPENING, THE CLOSURE MEMBER HAVING DEPENDING COLLARS AT THE PERIPHERY AND SURROUNDING THE CENTRAL OPENING ADAPTED TO BE
Claim 2
Dependent Claim
103 words
A LEAK-RESISTANT DRY CELL COMPRISING A METAL CAN FORMING AN ANODE, A CATHODE AND A DEPOLARIZING MIX ARRANGED IN THE CAN, THE CATHODE PROJECTING FROM THE TOP OF THE CAN, A METAL DISC COVERING THE BOTTOM OF THE CAN, A JACKET SURROUNDING THE CAN HAVING ITS LOWER EDGE CRIMPED TO THE DISC, A WASHER ARRANGED IN THE CAN ABOVE THE DEPOLARIZING MIX, A LAYER OF MATERIAL CAPABLE OF BEING SOFTENED BY HEAT ON SAID WASHER, AND A CLOSURE MEMBER COMPRISING A DISC HAVING A CENTRAL OPENING, THE CLOSURE MEMBER HAVING DEPENDING COLLARS AT THE PERIPHERY AND SURROUNDING THE CENTRAL OPENING ADAPTED TO BE
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) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |