US2765635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separation of gases
Assignee: Gulf Oil Corp
•
Filing: 1952-08-07
•
Granted: 1956-10-09
•
Expires: 1972-08-07
Abstract
No abstract record available.
Inventors
- 👤 Aaron K Redcay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:02
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/005; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A PROCESS FOR THE SEPARATION OF ETHYLENE FROM A GASEOUS MIXTURE CONTAINING COMPONENTS LIGHTER AND HEAVIER THAN ETHYLENE WHEREIN SAID GASEOUS MIXTURE IS PARTIALLY LIQUEFIED AND THEN SUBJECTED TO SEPARATION, THE IMPROVEMENT WHICH COMPRISES FRACTIONALLY DISTILLING SAID PARTIALLY LIQUEFIED GASEOUS MIXTURE TO SEPARATE AS BOTTOMS SUBSTANTIALLY ALL OF THE COMPONENTS HEAVIER THAN ETHANE AND AS OVERHEAD THE REMAINING COMPONENTS OF THE MIXTURE, EXTRACTING SAID OVERHEAD WITH AN ABSORPTION OIL TO DISSOLVE THEREIN ONLY C2 HYDROCARBONS, AND SEPARATING THE C2 HYDROCARBONS FROM THEIR SOLUTION IN THE ABSORPTION OIL.
Claim 2
Dependent Claim
88 words
IN A PROCESS FOR THE SEPARATION OF ETHYLENE FROM A GASEOUS MIXTURE CONTAINING COMPONENTS LIGHTER AND HEAVIER THAN ETHYLENE WHEREIN SAID GASEOUS MIXTURE IS PARTIALLY LIQUEFIED AND THEN SUBJECTED TO SEPARATION, THE IMPROVEMENT WHICH COMPRISES FRACTIONALLY DISTILLING SAID PARTIALLY LIQUEFIED GASEOUS MIXTURE TO SEPARATE AS BOTTOMS SUBSTANTIALLY ALL OF THE COMPONENTS HEAVIER THAN ETHANE AND AS OVERHEAD THE REMAINING COMPONENTS OF THE MIXTURE, EXTRACTING SAID OVERHEAD WITH AN ABSORPTION OIL TO DISSOLVE THEREIN ONLY C2 HYDROCARBONS, AND SEPARATING THE C2 HYDROCARBONS FROM THEIR SOLUTION IN THE ABSORPTION OIL.
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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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |