US3021379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic separators for primary batteries
Assignee: Individual
•
Filing: 1960-04-21
•
Granted: 1962-02-13
•
Expires: 1980-04-21
Abstract
No abstract record available.
Inventors
- 👤 Roland D Jackel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:04
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/431; H01M50/434; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A BASIC SEPARATOR UNIT FOR ASSEMBLY INTO A LARGE AREA SEPARATOR ADAPTED FOR INSERTION BETWEEN THE ACTIVE ELEMENTS OF A FUEL COMBUSTION TYPE OF PRIMARY ELECTRIC BATTERY COMPRISING A THIN PARALLELEPIPED HAVING TWO PRINCIPAL FACES IN THE FORM OF RECTANGULAR PARALLELOGRAMS AND FOUR THIN EDGE ALSO IN THE FORM OF RECTANGULAR PARALLELOGRAMS, SAID PARALLELEPIPED BEING COMPOSED OF 80 PARTS BY WEIGHT OF TALC, 10 PARTS BY WEIGHT OF BARIUM CARBONATE, 10 PARTS BY WEIGHT OF CERAMIC CLAY 1 1/2 PARTS BY WEIGHT OF AN HYDROCARBON EMULSION AND 1 1/2 PARTS BY WEIGHT OF SUITABLY MESH GRADED CORN MEAL AND HAVING TWO APERATURES FORMED THEREIN, SAID APERTURES BEING COAXIAL WITH THOSE AXES OF THE PARALLELEPIPED WHICH ARE PERPENDICULAR TO THE OPPOSED EDGES THEREOF AND PARALLEL TO THE PRINCIPAL FACES THEREOF;
References Cited (Backward Citations)
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US1842186A
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US2382136A
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US2505509A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |