US2857018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas separation
Assignee: MW Kellogg Co
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Filing: 1956-09-27
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Granted: 1958-10-21
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Expires: 1976-09-27
Abstract
No abstract record available.
Inventors
- 👤 Partridge William Russell
- 👤 Mahoney Frederick Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:58
CPC Classifications
C; C10; C10G; C10G5/00; C10G5/04; B; B01; B01D; B01D53/00; B01D53/14; B01D53/1406; B01D53/1487
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE METHOD FOR SEPARATING C2 HYDROCARBONS FROM A GASEOUS FEED MIXTURE CONTAINING THE SAME AND METHANE WHICH COMPRISES: PASSING SAID MIXTURE TO A FIRST ABSORPTION ZONE, IN SAID FIRST ABSORPTION ZONE CONTACTING SAID MIXTURE WITH A FIRST ABSORPTION MEDIUM COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF C3 AND C4 PARAFFINS ADAPTED TO PREFERENTIALLY ABSORB C2 HYDROCARBONS TO FORM A LIQUID PHASE CONTAINING SAID FIRST ABSORPTION MEDIUM AND C2 HYDROCARBONS AND A VAPOROUS PHASE CONTAINING METHANE AND ENTRAINED ABSORPTION MEDIUM, WITHDRAWING SAID VAPOROUS PHASE CONTAINING ENTRAINED ABSORPTION MEDIUM FROM SAID FIRST ABSORPTION ZONE AND PASSING SAME TO A SECOND ABSORPTION ZONE, IN SAID SECOND ABSORPTION ZONE CONTACTING SAID VAPOROUS PHASE FROM SAID FIRST ABSORPTION ZONE WITH A SECOND HYDROCARBON ABSORPTION MEDIUM OF LOWER VOLATILITY THAN SAID FIRST ABSORPTION MEDIUM AND ADAPTED TO PREFERENTIALLY ABSORB SAID FIRST ABSORPTION MEDIUM TO FORM IN SAID SECOND ABSORPTION ZONE A VAPOROUS PHASE AND A
Claim 2
Independent Claim
151 words
THE METHOD FOR SEPARATING C2 HYDROCARBONS FROM A GASEOUS FEED MIXTURE CONTAINING THE SAME AND METHANE WHICH COMPRISES: PASSING SAID MIXTURE TO A FIRST ABSORPTION ZONE, IN SAID FIRST ABSORPTION ZONE CONTACTING SAID MIXTURE WITH A FIRST ABSORPTION MEDIUM COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF C3 AND C4 PARAFFINS ADAPTED TO PREFERENTIALLY ABSORB C2 HYDROCARBONS TO FORM A LIQUID PHASE CONTAINING SAID FIRST ABSORPTION MEDIUM AND C2 HYDROCARBONS AND A VAPOROUS PHASE CONTAINING METHANE AND ENTRAINED ABSORPTION MEDIUM, WITHDRAWING SAID VAPOROUS PHASE CONTAINING ENTRAINED ABSORPTION MEDIUM FROM SAID FIRST ABSORPTION ZONE AND PASSING SAME TO A SECOND ABSORPTION ZONE, IN SAID SECOND ABSORPTION ZONE CONTACTING SAID VAPOROUS PHASE FROM SAID FIRST ABSORPTION ZONE WITH A SECOND HYDROCARBON ABSORPTION MEDIUM OF LOWER VOLATILITY THAN SAID FIRST ABSORPTION MEDIUM AND ADAPTED TO PREFERENTIALLY ABSORB SAID FIRST ABSORPTION MEDIUM TO FORM IN SAID SECOND ABSORPTION ZONE A VAPOROUS PHASE AND A
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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |