Patent US3328263A successfully refreshed from Google Patents.
US3328263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent recovery system for rubber polymerization processes
Assignee: Phillips Petroleum Co
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Filing: 1963-08-22
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Granted: 1967-06-27
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Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Robert L Huxtable
- 👤 Jr Lawrence V Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:19
CPC Classifications
C; C08; C08C; C08C2/00; C08C2/06; Y; Y10; Y10S; Y10S526/00; Y10S526/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
APPARATUS FOR SEPARATING SOLVENT AND SOLID POLYMERS FROM A POLYMERIZATION EFFLUENT PRODUCED IN A RUBBER POLYMERIZATION PROCESS COMPRISING POLYMER SOLIDS, SOLVENT, A HYDROCARBON REJECT FRACTION, AND AT TIMES A POLAR ORGANIC COMPOUND, COMPRISING A SEPARATION VESSEL, FIRST CONDUIT MEANS IN COMMUNICATION WITH AN INTERMEDIATE REGION OF SAID SEPARATION VESSEL FOR SUPPLYING SAID POLYMERIZATION EFFLUENT THERETO, A FRACTIONATION VESSEL, SECOND CONDUIT MEANS COMMUNICATING BETWEEN AN UPPER REGION OF SAID SEPARATION VESSEL AND AN INTERMEDIATE REGION OF SAID FRACTIONATION VESSEL FOR FEEDING A VOLATILE FRACTION OF SAID EFFLUENT TO SAID FRACTIONATION VESSEL, THIRD CONDUIT MEANS IN COMMUNICATION WITH A LOWER REGION OF SAID SEPARATION VESSEL FOR REMOVING A RESIDUAL FRACTION OF SAID EFFLUENT, A FIRST STORAGE VESSEL, FOURTH CONDUIT MEANS COMMUNICATING WITH AN UPPER REGION OF SAID FRACTIONATION VESSEL FOR REMOVING A VOLATILE FRACTION CONSISTING ESSENTIALLY OF THE HYDROCARBON REJECT FRACTION, FIFTH CONDUIT MEANS COMMUNICATING BETWEEN A LOWER REGION OF SAID FRACTIONATION VES-
Claim 2
Dependent Claim
151 words
APPARATUS FOR SEPARATING SOLVENT AND SOLID POLYMERS FROM A POLYMERIZATION EFFLUENT PRODUCED IN A RUBBER POLYMERIZATION PROCESS COMPRISING POLYMER SOLIDS, SOLVENT, A HYDROCARBON REJECT FRACTION, AND AT TIMES A POLAR ORGANIC COMPOUND, COMPRISING A SEPARATION VESSEL, FIRST CONDUIT MEANS IN COMMUNICATION WITH AN INTERMEDIATE REGION OF SAID SEPARATION VESSEL FOR SUPPLYING SAID POLYMERIZATION EFFLUENT THERETO, A FRACTIONATION VESSEL, SECOND CONDUIT MEANS COMMUNICATING BETWEEN AN UPPER REGION OF SAID SEPARATION VESSEL AND AN INTERMEDIATE REGION OF SAID FRACTIONATION VESSEL FOR FEEDING A VOLATILE FRACTION OF SAID EFFLUENT TO SAID FRACTIONATION VESSEL, THIRD CONDUIT MEANS IN COMMUNICATION WITH A LOWER REGION OF SAID SEPARATION VESSEL FOR REMOVING A RESIDUAL FRACTION OF SAID EFFLUENT, A FIRST STORAGE VESSEL, FOURTH CONDUIT MEANS COMMUNICATING WITH AN UPPER REGION OF SAID FRACTIONATION VESSEL FOR REMOVING A VOLATILE FRACTION CONSISTING ESSENTIALLY OF THE HYDROCARBON REJECT FRACTION, FIFTH CONDUIT MEANS COMMUNICATING BETWEEN A LOWER REGION OF SAID FRACTIONATION VES-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |