US2912479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separators for storage batteries and method of making them
Assignee: Koehler Manufacturing Co
•
Filing: 1957-04-11
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Granted: 1959-11-10
•
Expires: 1977-04-11
Abstract
No abstract record available.
Inventors
- 👤 Alton B Poole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:55
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/431; H01M50/434; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A COMPOSITION ADAPTED FOR THE MANUFACTURE OF SEPARATORS FOR STORAGE BATTERIES OF THE NON-SPILLABLE TYPE. CONSISTING ESSENTIALLY OF 20 TO 40 PERCENT OF A COMMINUTED, HARD SILICA GEL, 5 TO 25 PERCENT FINELY DIVIDED, PURE, SOFT, COMPRESSIBLE SILICA, 40 TO 60 PERCENT WATER. 2,5 TO 7 PERCENT BINDER, DRY BASIS, AND 1 TO 4 PERCENT FOAMING AGENT, DRY BASIS, PARTS BEING BY WEIGHT, SAID COMPOSITION BEING SUBSTANTIALLY FREE FROM ELECTROLYTES,
Claim 2
Dependent Claim
70 words
A COMPOSITION ADAPTED FOR THE MANUFACTURE OF SEPARATORS FOR STORAGE BATTERIES OF THE NON-SPILLABLE TYPE. CONSISTING ESSENTIALLY OF 20 TO 40 PERCENT OF A COMMINUTED, HARD SILICA GEL, 5 TO 25 PERCENT FINELY DIVIDED, PURE, SOFT, COMPRESSIBLE SILICA, 40 TO 60 PERCENT WATER. 2,5 TO 7 PERCENT BINDER, DRY BASIS, AND 1 TO 4 PERCENT FOAMING AGENT, DRY BASIS, PARTS BEING BY WEIGHT, SAID COMPOSITION BEING SUBSTANTIALLY FREE FROM ELECTROLYTES,
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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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |