Patent US3131160A successfully refreshed from Google Patents.
US3131160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agglomeration of fine rubber particles
Assignee: Phillips Petroleum Co
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Filing: 1960-10-03
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Granted: 1964-04-28
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Expires: 1980-10-03
Abstract
No abstract record available.
Inventors
- 👤 James W Alexander
- 👤 Charles L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:20
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/02; C08C1/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A PROCESS FOR PREPARING DRY RUBBERY DIENE POLYMER COMPOSITIONS CONTAINING OIL WHEREIN A RUBBERY DIENE POLYMER CRUMB CONTAINING OIL IS WASHED INA RESLURRY ZONE WITH WATER, WATER CONTAINING RUBBERY DIENE POLYMER FINES IS SEPARATED FROM SAID CRUMB, SAID SEPARATED RUBBERY DIENE POLYMER CRUMB IS PASSED INTO A DRYING ZONE, AND DRY RUBBERY DIENE POLYMER CRUMB AND WATER CONTAINING RUBBERY DIENE POLYMER FINES ARE SEPARATELY RECOVERED FROM SAID DRYING ZONE, THE IMPROVEMENT WHICH COMPRISES SEPARATING FINES FROM SAID WATER SEPARATED FROM SAID RUBBERY DIENE POLYMER CRUMB AND FROM SAID WATER RECOVERED FROM SAID DRYING ZONE; PASSING SAID FINES INTO SAID RESLUURRY ZONE CONTAINING SAID RUBBERY DIENE POLYMER CRUMB AND WATER; INTRODUCING AN EMULSION OF RUBBER EXTENDER OIL IN WATER INTO SAID RESLURRY ZONE; AND AGITATING THE RESULTING MIXTURE.
Claim 2
Dependent Claim
128 words
IN A PROCESS FOR PREPARING DRY RUBBERY DIENE POLYMER COMPOSITIONS CONTAINING OIL WHEREIN A RUBBERY DIENE POLYMER CRUMB CONTAINING OIL IS WASHED INA RESLURRY ZONE WITH WATER, WATER CONTAINING RUBBERY DIENE POLYMER FINES IS SEPARATED FROM SAID CRUMB, SAID SEPARATED RUBBERY DIENE POLYMER CRUMB IS PASSED INTO A DRYING ZONE, AND DRY RUBBERY DIENE POLYMER CRUMB AND WATER CONTAINING RUBBERY DIENE POLYMER FINES ARE SEPARATELY RECOVERED FROM SAID DRYING ZONE, THE IMPROVEMENT WHICH COMPRISES SEPARATING FINES FROM SAID WATER SEPARATED FROM SAID RUBBERY DIENE POLYMER CRUMB AND FROM SAID WATER RECOVERED FROM SAID DRYING ZONE; PASSING SAID FINES INTO SAID RESLUURRY ZONE CONTAINING SAID RUBBERY DIENE POLYMER CRUMB AND WATER; INTRODUCING AN EMULSION OF RUBBER EXTENDER OIL IN WATER INTO SAID RESLURRY ZONE; AND AGITATING THE RESULTING MIXTURE.
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |