US3225113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying a liquid olefinic hydrocarbon of its ether impurity
Assignee: Gulf Research and Development Co
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Filing: 1962-10-25
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Granted: 1965-12-21
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Expires: 1982-10-25
Abstract
No abstract record available.
Inventors
- 👤 John G Mcnulty
- 👤 William L Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:32
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR SEPARATING A LIQUID OLEFINIC HYDROCARBON FROM AN ETHER SELECTED FROM THE GROUP CONSISTING OF SATURATED ALIPHATIC AND SATURATED CYCLIC ETHERS WHEREIN THE CARBON ATOM TO OXYGEN RATIO IN THE MOLECULE IS FROM 2:1 TO 8:1 DIFFICULT TO SEPARATE THEREFROM WHICH COMPRISES ADDING AN AQUEOUS SOLUTION OF CALCIUM CHLORIDE TO THE MIXTURE IN AN AMOUNT SUFFICIENT TO FORM A COMPLEX WITH SAID ETHER AND THEREAFTER SEPARATING SAID COMPLEX FROM SAID LIQUID OLEFINIC HYDROCARBON.
Claim 2
Dependent Claim
75 words
A PROCESS FOR SEPARATING A LIQUID OLEFINIC HYDROCARBON FROM AN ETHER SELECTED FROM THE GROUP CONSISTING OF SATURATED ALIPHATIC AND SATURATED CYCLIC ETHERS WHEREIN THE CARBON ATOM TO OXYGEN RATIO IN THE MOLECULE IS FROM 2:1 TO 8:1 DIFFICULT TO SEPARATE THEREFROM WHICH COMPRISES ADDING AN AQUEOUS SOLUTION OF CALCIUM CHLORIDE TO THE MIXTURE IN AN AMOUNT SUFFICIENT TO FORM A COMPLEX WITH SAID ETHER AND THEREAFTER SEPARATING SAID COMPLEX FROM SAID LIQUID OLEFINIC HYDROCARBON.
References Cited (Backward Citations)
US2305323A
Cited
US2386357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |