US2886611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separate recovery of c3 and c4 hydrocarbons
Assignee: MW Kellogg Co
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Filing: 1956-01-24
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Granted: 1959-05-12
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Expires: 1976-01-24
Abstract
No abstract record available.
Inventors
- 👤 Charles C King
- 👤 Hanisian John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:54
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE PROCESS FOR THE SEPARATION OF A HYDROCARBON FRACTION COMPRISING C3 HYDROCARBON FROM A MIXTURE CONTAINING THE SAME, C3 HYDROCARBONS AND A SULFUR COMPOUND WHICH COMPRISES FRACTIONING SAID MIXTURE IN A FIRST DISTILLATION ZONE, WITHDRAWING AN OVERHEAD FRACTION COMPRISING C3 AND C4 HYDROCARBONS AND SULFUR COMPOUND FROM THE FIRST DISTILLATION ZONE, TREATING SAID OVERHEAD FRACTION FOR THE REMOVAL OF SULFUR COMPOUND, PASSING SAID THUS-TREATED OVERHEAD FRACTION TO A SECOND DISTILLATION ZONE, IN SAID SECOND DISTILLATION ZONE SEPARATING AN OVERHEAD FRACTION COMPRISING C3 HYDROCARBONS AND A BOTTOMS FRACTION COMPRISING C3 AND C4 HYDROCARBONS, PASSING BOTTOMS FRACTION FROM THE SECOND DISTILLATION ZONE AS REFLUX TO THE UPPER PORTION OF SAID FIRST DISTILLATION ZONE AND WITHDRAWING OVERHEAD FRACTION FROM THE SECOND DISTILLATION ZONE.
Claim 2
Dependent Claim
120 words
THE PROCESS FOR THE SEPARATION OF A HYDROCARBON FRACTION COMPRISING C3 HYDROCARBON FROM A MIXTURE CONTAINING THE SAME, C3 HYDROCARBONS AND A SULFUR COMPOUND WHICH COMPRISES FRACTIONING SAID MIXTURE IN A FIRST DISTILLATION ZONE, WITHDRAWING AN OVERHEAD FRACTION COMPRISING C3 AND C4 HYDROCARBONS AND SULFUR COMPOUND FROM THE FIRST DISTILLATION ZONE, TREATING SAID OVERHEAD FRACTION FOR THE REMOVAL OF SULFUR COMPOUND, PASSING SAID THUS-TREATED OVERHEAD FRACTION TO A SECOND DISTILLATION ZONE, IN SAID SECOND DISTILLATION ZONE SEPARATING AN OVERHEAD FRACTION COMPRISING C3 HYDROCARBONS AND A BOTTOMS FRACTION COMPRISING C3 AND C4 HYDROCARBONS, PASSING BOTTOMS FRACTION FROM THE SECOND DISTILLATION ZONE AS REFLUX TO THE UPPER PORTION OF SAID FIRST DISTILLATION ZONE AND WITHDRAWING OVERHEAD FRACTION FROM THE SECOND DISTILLATION ZONE.
References Cited (Backward Citations)
US2514294A
Cited
US2745889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |