Patent US3331789A successfully refreshed from Google Patents.
US3331789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounded rubbers
Assignee: Texas Power and Light Co
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Filing: 1963-06-07
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Granted: 1967-07-18
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Richard A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:05
CPC Classifications
C; C08; C08K; C08K11/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A COMPOUNDED RUBBER COMPOSITION CONSISTING ESSENTIALLY OF MAJOR RUBBER CONSTITUENT SELECTED FROM THE CLASS CONSISTING OF NATURAL RUBBER, THE COPOLYMERS OF BUTADIENE AND STYRENE, THE COPOLYMERS OF BUTADIENE AND NITRILE AND THE POLYCHLOROPRENE RUBBERS, AND A MATERIAL DERIVED FROM TARS RESULTING FROM THE CARBONIZATION OF COAL AT TEMPERATURES BELOW ABOUT 1150*F. BY EXTRACTING SAID TARS WITH AN ALCOHOL OF FORMULA CXH2X+10H IN WHICH X EQUALS 1 TO 4, SAID MATERIAL BEING PRESENT IN AMOUNT EFFECTIVE TO MODIFY THE PROPERTIES OF THE SAID RUBBER CONSTITUENT, THE SAID PROPERTIES INCLUDING THOSE OF ANTI-OXIDATION SOFTENING, RESPONSE TO RUBBER WORKING PROCESSES, RESISTANCE TO DETERIORATION, WITHSTANDING OF DYNAMIC FLEXING, RESISTANCE TO IMPACT, RESISTANCE TO TEAR AND RESPONSE TO CURING.
Claim 2
Dependent Claim
114 words
A COMPOUNDED RUBBER COMPOSITION CONSISTING ESSENTIALLY OF MAJOR RUBBER CONSTITUENT SELECTED FROM THE CLASS CONSISTING OF NATURAL RUBBER, THE COPOLYMERS OF BUTADIENE AND STYRENE, THE COPOLYMERS OF BUTADIENE AND NITRILE AND THE POLYCHLOROPRENE RUBBERS, AND A MATERIAL DERIVED FROM TARS RESULTING FROM THE CARBONIZATION OF COAL AT TEMPERATURES BELOW ABOUT 1150*F. BY EXTRACTING SAID TARS WITH AN ALCOHOL OF FORMULA CXH2X+10H IN WHICH X EQUALS 1 TO 4, SAID MATERIAL BEING PRESENT IN AMOUNT EFFECTIVE TO MODIFY THE PROPERTIES OF THE SAID RUBBER CONSTITUENT, THE SAID PROPERTIES INCLUDING THOSE OF ANTI-OXIDATION SOFTENING, RESPONSE TO RUBBER WORKING PROCESSES, RESISTANCE TO DETERIORATION, WITHSTANDING OF DYNAMIC FLEXING, RESISTANCE TO IMPACT, RESISTANCE TO TEAR AND RESPONSE TO CURING.
Claim 3
Dependent Claim
117 words
A COMPOUNDED RUBBER COMPOSITION CONSISTING ESSENTIALLY OF MAJOR RUBBER CONSTITUENT SELECTED FROM THE CLASS CONSISTING OF NATURAL RUBBER, THE COPOLYMERS OF BUTADIENE AND STYRENE, THE COPOLYMERS OF BUTADIENE AND NITRILE AND THE POLYCHLOROPRENE RUBBERS, AND A MATERIAL DERIVED FROM TARS RESULTING FROM THE CARBONIZATION OF COAL AT TEMPERATURES BELOW ABOUT 1150*F. BY EXTRACTING SAID TARS WITH A LIQUID ALIPHATIC HYDROCARBON CONTIANING NOT LESS THAN 4 OR MORE THAN 8 CARBON ATOMS, SAID MATERIAL BEING PRESENT IN AMOUNT EFFECTIVE TO MODIFY THE PROPERTIES OF THE SAID RUBBER CONSTITUENT, THE SAID PROPERTIES INCLUDING THOSE OF ANTI-OXIDATION, SOFTENING, RESPONSE TO RUBBER WORKING PROCESSES, RESISTANCE TO DETERIORATION, WITHSTANDING OF DYNAMIC FLEXING, RESISTANCE TO IMPACE, RESISTANCE TO TEAR AND RESPONSE TO CURING.
Claim 4
Dependent Claim
117 words
A COMPOUNDED RUBBER COMPOSITION CONSISTING ESSENTIALLY OF MAJOR RUBBER CONSTITUENT SELECTED FROM THE CLASS CONSISTING OF NATURAL RUBBER, THE COPOLYMERS OF BUTADIENE AND STYRENE, THE COPOLYMERS OF BUTADIENE AND NITRILE AND THE POLYCHLOROPRENE RUBBERS, AND A MATERIAL DERIVED FROM TARS RESULTING FROM THE CARBONIZATION OF COAL AT TEMPERATURES BELOW ABOUT 1150*F. BY EXTRACTING SAID TARS WITH A LIQUID ALIPHATIC HYDROCARBON CONTIANING NOT LESS THAN 4 OR MORE THAN 8 CARBON ATOMS, SAID MATERIAL BEING PRESENT IN AMOUNT EFFECTIVE TO MODIFY THE PROPERTIES OF THE SAID RUBBER CONSTITUENT, THE SAID PROPERTIES INCLUDING THOSE OF ANTI-OXIDATION, SOFTENING, RESPONSE TO RUBBER WORKING PROCESSES, RESISTANCE TO DETERIORATION, WITHSTANDING OF DYNAMIC FLEXING, RESISTANCE TO IMPACE, RESISTANCE TO TEAR AND RESPONSE TO CURING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |