US3298869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated battery separators
Assignee: Amerace Corp
•
Filing: 1961-08-23
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Granted: 1967-01-17
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Expires: 1981-08-23
Abstract
No abstract record available.
Inventors
- 👤 Herman A Swoboda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:50
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/449; H01M50/451; H01M50/403; H01M50/406; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A BATTERY SEPARATOR CONSISTING OF A TWO-PLY PERMANENTLY JOINED AND LAMINATED BODY, IN WHICH ONE PLY OF SAID BODY IS MADE UP OF A POROUS SHEET OF FELTED FIBERS IMPREGNATED WITH ABOUT 15-25% OF CURED RESIN SELECTED FROM A GROUP CONSISTING OF THERMOSETTING AND THERMOPLASTIC RESINS BASED ON THE DRY WEIGHT OF RESIN PLUS FIBER SHEET; AND SAID TWO PLIES BEING INTIMATELY AND PERMANENTLY INTERLOCKED TOGETHER THROUGHOUT WITH PORTIONS OF SAID RUBBER COMPOSITION EXTENDING INTO PORES IN SAID PLY OF FELTED FIBERS, AND WITH EXTENDED END PORTIONS OF SOME OF SAID FIBERS EXTENDING INTO AND BEING EMBEDDED IN SAID RUBBER COMPOSITION.
Claim 2
Dependent Claim
101 words
A BATTERY SEPARATOR CONSISTING OF A TWO-PLY PERMANENTLY JOINED AND LAMINATED BODY, IN WHICH ONE PLY OF SAID BODY IS MADE UP OF A POROUS SHEET OF FELTED FIBERS IMPREGNATED WITH ABOUT 15-25% OF CURED RESIN SELECTED FROM A GROUP CONSISTING OF THERMOSETTING AND THERMOPLASTIC RESINS BASED ON THE DRY WEIGHT OF RESIN PLUS FIBER SHEET; AND SAID TWO PLIES BEING INTIMATELY AND PERMANENTLY INTERLOCKED TOGETHER THROUGHOUT WITH PORTIONS OF SAID RUBBER COMPOSITION EXTENDING INTO PORES IN SAID PLY OF FELTED FIBERS, AND WITH EXTENDED END PORTIONS OF SOME OF SAID FIBERS EXTENDING INTO AND BEING EMBEDDED IN SAID RUBBER COMPOSITION.
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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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |