Patent US3565280A successfully refreshed from Google Patents.
Patent US2803690A successfully refreshed from Google Patents.
US2803690A
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Wet cell battery
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1956-03-01
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Granted: 1957-08-20
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Expires: 1976-03-01
Abstract
No abstract record available.
Inventors
- 👤 Edward W Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:41
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/02; H01M10/06; H01M10/08; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A WET CELL BATTERY INCLUDING A CASING, MEANS DEFINING A CELL WITHIN SAID CASING, A PAIR OF ELECTRODES ASSOCIATED WITH SAID CELL, AND A LIQUID ELECTROLYTE IN SAID CELL, THE IMPROVEMENT WHICH COMPRISES A LIQUID LAYER OF AN ORGANO-SILOXANE POLYMER HAVING A SPECIFIC GRAVITY LESS THAN THAT OF SAID ELECTROLYTE FLOATING ON SAID ELECTOLYTE.
Claim 2
Dependent Claim
55 words
IN A WET CELL BATTERY INCLUDING A CASING, MEANS DEFINING A CELL WITHIN SAID CASING, A PAIR OF ELECTRODES ASSOCIATED WITH SAID CELL, AND A LIQUID ELECTROLYTE IN SAID CELL, THE IMPROVEMENT WHICH COMPRISES A LIQUID LAYER OF AN ORGANO-SILOXANE POLYMER HAVING A SPECIFIC GRAVITY LESS THAN THAT OF SAID ELECTROLYTE FLOATING ON SAID ELECTOLYTE.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |