US2500353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for fractionally separating a mixture of normally gaseous components
Assignee: Universal Oil Products Co
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Filing: 1946-12-21
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Granted: 1950-03-14
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Expires: 1966-12-21
Abstract
No abstract record available.
Inventors
- 👤 James E Gantt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:31
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/005; F; F25; F25J; F25J3/00; F25J3/02; F25J2210/00; F25J2210/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
A PROCESS FOR RECOVERING A SUBSTANTIALLY PURE ETHYLENE FRACTION FROM A MIXTURE CONTAINING LOWER AND HIGHER BOILING COMPONENTS, A SMALL AMOUNT OF ACETYLENE AND AN AMOUNT OF HYDROGEN IN A MOLECULAR CONCENTRATION AT LEAST EQUAL TO THE MOLECULAR CONCENTRATION OF SAID ACETYLENE, WHICH COMPRISES SEPARATING SAID MIXTURE BY COMPRESSION AND COOLING INTO HIGH BOILING FRACTIONS SUBSTANTIALLY FREE OF ACETYLENE AND A LOWER BOILING NORMALLY GASEOUS FRACTION CONTAINING ETYLENE, ACETYLENE AND HYDROGEN, HYDROGENATING AT LEAST A MAJOR PORTION OF SAID ACETYLENE WITH SAID HYDROGEN TO FORM ETHYLENE, SUBJECTING THE RESULTANT GAS STREAM TO FRACTIONATION UNDER REFLUXING CONDITIONS AND THEREIN SEPARATING AN ETHYLENE FRACTION FROM AT LEAST ONE LIGHTER FRACTION AND AT LEAST ONE HEAVIER FRACTION, AND RECYCLING AT LEAST A PORTION OF SAID HEAVIER FRACTION TO SAID COMPRESSION AND COOLING TREATMENT.
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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |