Patent US2580415A successfully refreshed from Google Patents.
US2580415A
Expired / Lapsed
US
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Primary cell structure
Assignee: Individual
•
Filing: 1950-11-03
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Granted: 1952-01-01
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Grenville B Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:40
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/543; H01M50/552; H01M50/559; H01M50/56; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A LEAK-RESISTANT PRIMARY ALKALINE DRY CELL HAVING A CATHODIC ELEMENT, AN ANODIC ELEMENT AND AN IONICALLY CONDUCTIVE BARRIER DISPOSED BETWEEN SAID ELEMENTS, THE FIRST OF SAID ELEMENTS BEING HOUSED IN A FIRST MEAL CONTAINER, A FIRST JACKET OF THERMO-PLASTIC INSULATING MATERIAL FIRMLY BONDED TO SAID FIRST METAL CONTAINER BUT LEAVING AN EXPOSED CIRCUIT TERMINAL AT THE CLOSED END THEREOF, SAID FIRST JACKET BEING RABBETED AT ITS OPEN EDGES, THE SECOND OF SAID ELEMENTS BEING HOUSED IN A SECOND METAL CONTAINER, A SECOND JACKET OF THERMO-PLASTIC INSULATING MATERIAL FIRMLY BONDED TO SAID SECOND METAL CONTAINER, BUT LEAVING AN EXPOSED CIRCUIT TERMINAL AT THE CLOSED END THEREOF, THE OPEN EDGES OF SAID SECOND JACKET BEING RABBETED TO RECEIVE THE RABBETED
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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |