US2904527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing rubber composition comprising asphaltic oil and rubber
Assignee: KERR MC GEE OIL IND Inc
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Filing: 1955-10-21
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Granted: 1959-09-15
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Expires: 1975-10-21
Abstract
No abstract record available.
Inventors
- 👤 Garwin Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:37
CPC Classifications
C; C08; C08L; C08L9/00; C08L9/06; C08L21/00; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF PREPARING A RUBBER COMPOSITION COMPRISING THE STEPS OF INCORPORATING ABOUT 1-25% BY WEIGHT OF ASPHALTIC OIL DERIVED FROM ASPHALTIC BITUMINOUS MATERAL WITH RUBBER, SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, POLYCHLOROPRENE, HOMO-POLYMERS OF CONJUGATED DIOLEFINS AND COPOLYMERS OF CONJUGATED DIOLEFINS AND ETHYLENICALLY UNSATURATED MONOMERS, THE ASPHALTIC OIL HAVING A SAYBOLT-FUROL VISCOSITY AT 210*F. OF 35-100 SECONDS, A SPECIFIC GRAVITY AT 60*F. OF ABOUT 0.97 AND A VISCOSITY INDEX OF AT LEAST ABOUT 70.
Claim 2
Independent Claim
77 words
A METHOD OF PREPARING A RUBBER COMPOSITION COMPRISING THE STEPS OF INCORPORATING ABOUT 1-25% BY WEIGHT OF ASPHALTIC OIL DERIVED FROM ASPHALTIC BITUMINOUS MATERAL WITH RUBBER, SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, POLYCHLOROPRENE, HOMO-POLYMERS OF CONJUGATED DIOLEFINS AND COPOLYMERS OF CONJUGATED DIOLEFINS AND ETHYLENICALLY UNSATURATED MONOMERS, THE ASPHALTIC OIL HAVING A SAYBOLT-FUROL VISCOSITY AT 210*F. OF 35-100 SECONDS, A SPECIFIC GRAVITY AT 60*F. OF ABOUT 0.97 AND A VISCOSITY INDEX OF AT LEAST ABOUT 70.
References Cited (Backward Citations)
US2783188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |