Patent US3279087A successfully refreshed from Google Patents.
US3279087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid polymer and liquid diluent separator apparatus and method
Assignee: Phillips Petroleum Co
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Filing: 1963-11-08
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Granted: 1966-10-18
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Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Richard A Hearne
- 👤 Cox Ralph
- 👤 Robert G Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:34
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A METHOD FOR REMOVING A LIQUID HYDROCARBON DILUENT FROM A POLYMER SOLIDS COMPRISING EVAPORATING HYDROCARBON DILUENT FROM SAID SOLIDS IN A FLASH ZONE THEREBY FORMING A STREAM OF POLYMER SOLIDS CARRYING RESIDUAL DILUENT, PASSING SAID SOLIDS FROM SAID FLASH ZONE TO A DRYING ZONE, CONTACTING SAID SOLIDS IN SAID DRYING ZONE WITH A NONCOMBUSTIBLE GAS WHILE SIMULTANEOUSLY MECHANICALLY WORKING SAID SOLIDS THEREBY EVAPORATING A SUBSTANTIAL PORTION OF THE RESIDUAL HYDROCARBON DILUENT, PASSING THE RESULTANT SOLIDS CONTAINING RESIDUAL DILUENT FROM SAID DRYING ZONE TO A PURGE ZONE THROUGH A CHANNEL, FORMING A THIN LAYER OF POLYMER SOLIDS IN SAID ZONE PURGE WHILE PASSING SAID SOLIDS LATERALLY AND DOWNWARDLY THROUGH SAID PURGE CHAMBER, INTRODUCING AN INERT GAS INTO THE LOWER PORTION OF THE PURGE CHAMBER WHICH PASSES UPWARDLY THROUGH SAID LAYER
Claim 2
Independent Claim
129 words
A METHOD FOR REMOVING A LIQUID HYDROCARBON DILUENT FROM A POLYMER SOLIDS COMPRISING EVAPORATING HYDROCARBON DILUENT FROM SAID SOLIDS IN A FLASH ZONE THEREBY FORMING A STREAM OF POLYMER SOLIDS CARRYING RESIDUAL DILUENT, PASSING SAID SOLIDS FROM SAID FLASH ZONE TO A DRYING ZONE, CONTACTING SAID SOLIDS IN SAID DRYING ZONE WITH A NONCOMBUSTIBLE GAS WHILE SIMULTANEOUSLY MECHANICALLY WORKING SAID SOLIDS THEREBY EVAPORATING A SUBSTANTIAL PORTION OF THE RESIDUAL HYDROCARBON DILUENT, PASSING THE RESULTANT SOLIDS CONTAINING RESIDUAL DILUENT FROM SAID DRYING ZONE TO A PURGE ZONE THROUGH A CHANNEL, FORMING A THIN LAYER OF POLYMER SOLIDS IN SAID ZONE PURGE WHILE PASSING SAID SOLIDS LATERALLY AND DOWNWARDLY THROUGH SAID PURGE CHAMBER, INTRODUCING AN INERT GAS INTO THE LOWER PORTION OF THE PURGE CHAMBER WHICH PASSES UPWARDLY THROUGH SAID LAYER
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |