Patent US2526591A successfully refreshed from Google Patents.
US2526591A
Expired / Lapsed
US
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Filling material for secondary dryaccumulator batteries
Assignee: Individual
•
Filing: 1947-08-04
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Granted: 1950-10-17
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Expires: 1967-08-04
Abstract
No abstract record available.
Inventors
- 👤 Szper Jonas Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:57
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/44; H01M50/431; H01M50/434; H01M50/437; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A SHEET TYPE POROUS ABSORBENT ELEMENT FOR COMPLETELY FILLING THE SPACES BETWEEN THE PLATES OF A SECONDARY BATTERY OF THE DRY ACCUMULATOR TYPE AND FOR SUPPORTING THE PLATES OVER THEIR ENTIRE SURFACE AREA, SAID ELEMENT COMPRISING A CUSHION-LIKE COMPRESSIBLE LAYER OF ABSORBENT SULPHURIC-ACID RESISTANT MINERAL PARTICLES RESILIENTLY HELD TOGETHTER BY MINUTE SEPARATE SOFT AND RESILIENT PARTICLES OF A SOFT ELASTOMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, SYNTHETIC RUBBERS AND CHLORINATED RUBBER, AND A THIN SUPPORING SHEET OF FIBROUS MATERIAL.
Claim 2
Dependent Claim
81 words
A SHEET TYPE POROUS ABSORBENT ELEMENT FOR COMPLETELY FILLING THE SPACES BETWEEN THE PLATES OF A SECONDARY BATTERY OF THE DRY ACCUMULATOR TYPE AND FOR SUPPORTING THE PLATES OVER THEIR ENTIRE SURFACE AREA, SAID ELEMENT COMPRISING A CUSHION-LIKE COMPRESSIBLE LAYER OF ABSORBENT SULPHURIC-ACID RESISTANT MINERAL PARTICLES RESILIENTLY HELD TOGETHTER BY MINUTE SEPARATE SOFT AND RESILIENT PARTICLES OF A SOFT ELASTOMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, SYNTHETIC RUBBERS AND CHLORINATED RUBBER, AND A THIN SUPPORING SHEET OF FIBROUS MATERIAL.
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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) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |