US3328480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of diolefins from a reaction effluent
Assignee: Phillips Petroleum Co
•
Filing: 1962-12-31
•
Granted: 1967-06-27
•
Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 John W Begley
- 👤 Richard W Carney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/12; C10G21/16; C07; C07C; C07C7/00; C07C7/005; C07C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS WHICH COMPRISES CONTACTING A HYDROCARBON MIXTURE WITH A SOLVENT MIXTURE IN AN EXTRACTION ZONE, SAID HYDROCARBON MIXTURE COMPRISING PARAFFIN, OLEFIN, AND DIOLEFIN HYDROCARBONS, SAID SOLVENT MIXTURE COMPRISING A MAJOR PORTION OF PROPYLENE CARBONATE AND A MINOR PORTION OF ETHYLENE CARBONATE IN A VOLUME SUFFICIENT TO SELECTIVELY EXTRACT SUBSTANTIALLY ALL OF SAID DIOLEFINS FROM SAID HYDROCARBON MIXTURE, AND UNDER PRESSURE SUFFICIENT TO
Claim 2
Dependent Claim
63 words
A PROCESS WHICH COMPRISES CONTACTING A HYDROCARBON MIXTURE WITH A SOLVENT MIXTURE IN AN EXTRACTION ZONE, SAID HYDROCARBON MIXTURE COMPRISING PARAFFIN, OLEFIN, AND DIOLEFIN HYDROCARBONS, SAID SOLVENT MIXTURE COMPRISING A MAJOR PORTION OF PROPYLENE CARBONATE AND A MINOR PORTION OF ETHYLENE CARBONATE IN A VOLUME SUFFICIENT TO SELECTIVELY EXTRACT SUBSTANTIALLY ALL OF SAID DIOLEFINS FROM SAID HYDROCARBON MIXTURE, AND UNDER PRESSURE SUFFICIENT TO
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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 |