Patent US2609408A successfully refreshed from Google Patents.
US2609408A
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Deferred action type gas depolarized dry cell having prolonged shelf life
Assignee: Union Carbide Corp
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Filing: 1949-02-19
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Granted: 1952-09-02
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Expires: 1969-02-19
Abstract
No abstract record available.
Inventors
- 👤 George W Heise
- 👤 Russell P Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:38
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M6/00; H01M6/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A DEFERRED ACTION DRY CELL HAVING AN ENCLOSED CASING OUTSIDE OF AND SPACED FROM SAID CELL ON MORE THAN ONE SIDE HERMETICALLY SEALING THE CELL, AT LEAST ONE ELEMENT OF THE CELL CONTAINING MOISTURE AND BEING EXPOSED TO THE CASING ATMOSPHERE BETWEEN THE CELL AND CASING, AND A BIBULOUS MATERIAL OUTSIDE OF THE CELL AND SPACED FROM THE MOISTURE CONTAINING CELL ELEMENT, HAVING A LARGER EXPOSED SURFACE THAN THE EXPOSED SURFACE OF THE CELL WITHIN THE CASING WHEREBY MOISTURE FROM THE BIBULOUS MATERIAL MAY SPREAD ANY DEPOSIT OF MOISTURE OVER ITS SURFACE AND TEND
Claim 2
Dependent Claim
94 words
A DEFERRED ACTION DRY CELL HAVING AN ENCLOSED CASING OUTSIDE OF AND SPACED FROM SAID CELL ON MORE THAN ONE SIDE HERMETICALLY SEALING THE CELL, AT LEAST ONE ELEMENT OF THE CELL CONTAINING MOISTURE AND BEING EXPOSED TO THE CASING ATMOSPHERE BETWEEN THE CELL AND CASING, AND A BIBULOUS MATERIAL OUTSIDE OF THE CELL AND SPACED FROM THE MOISTURE CONTAINING CELL ELEMENT, HAVING A LARGER EXPOSED SURFACE THAN THE EXPOSED SURFACE OF THE CELL WITHIN THE CASING WHEREBY MOISTURE FROM THE BIBULOUS MATERIAL MAY SPREAD ANY DEPOSIT OF MOISTURE OVER ITS SURFACE AND TEND
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) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |