US3057771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ribbed battery separator paper and method and apparatus for making the same
Assignee: Riegel Paper Corp
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Filing: 1958-11-07
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Granted: 1962-10-09
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Expires: 1978-11-07
Abstract
No abstract record available.
Inventors
- 👤 Schenck Willard Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/04; D21F9/046; D21F11/00; D21F11/006; H; H01; H01M; H01M50/00; H01M50/40; H01M50/403; H01M50/409; H01M50/411; H01M50/429; H01M50/4295; H01M50/44; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
THE METHOD OF MAKING RIBBED, RESIN IMPREGNATED, BATTERY SEPARATOR PAPER FOR USE IN MAKING RIBBED BATTERY SEPARATORS, WHICH COMPRISES FORMING A PAPER WEB FROM BATTERY SEPARATOR PAPER STOCK BY CAUSING THE STOCK TO BE LAID ON A FORAMING SURFACE HAVING A PLURALITY OF GROOVES THEREIN, ONE SURFACE OF THE WEB, AS FORMED, FOLLOWING THE CONTOURS OF THE GROOVES, REMOVING THE FORMED WEB FROM THE FORMING SURFACE, IMPARTING RESIN TO THE WEB MATERIAL, AND DRYING THE WEB.
References Cited (Backward Citations)
US2015416A
Cited
US2668786A
Cited
US2662106A
Cited
US2680996A
Cited
GB772172A
Cited
US2882331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |