Patent US2845395A successfully refreshed from Google Patents.
US2845395A
Expired / Lapsed
US
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Reclaiming vulcanized rubber in the presence of unvulcanized high styrene polymeric material and product
Assignee: U S Rubber Reclaiming Co Inc
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Filing: 1954-04-20
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Granted: 1958-07-29
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Expires: 1974-04-20
Abstract
No abstract record available.
Inventors
- 👤 Edward F Sverdrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:17
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J2321/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
THE PROCESS OF RECLAIMING TIRE OR TUBE SCRAP WHICH COMPRISES MIXING THE VULCANIZED RUBBER SCRAP WITH FROM 10% TO 200*, BASED ON THE RUBBERY HYDROCARBON CONTENT OF THE SCRAP, OF AN UNVULCANIZED HIGH-STYRENE POLYMERIC MATERIAL WHICH IS OF THE CLASS CONSISTING OF STYRENEBUTADIENE COPOLYMERS AND POLYSTYRENE AND WHEREIN STRENE CONSTITUTES NOT SUBSTANTIALLY LESS THAN 70% BY WEIGHT OF THE POLYMERIC MATERIAL, AND PLASTICIZING THE MIXTURE BY THE MASTICATING ACTION OF HEAT-GENERATING MECHANICAL WORKING AT A TEMPERATURE OF FROM 200*F. TO 500*F. TO PRODUCE A VULCANIZABLE PRODUCT.
References Cited (Backward Citations)
US2535931A
Cited
US2653915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |