US2905734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cracking and separation process for making ethylene
Assignee: Phillips Petroleum Co
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Filing: 1956-08-02
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Granted: 1959-09-22
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Expires: 1976-08-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Davison
- 👤 Jack R Williams
- 👤 Robert A Kobie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:24
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/02; C07C11/04; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE METHOD OF PRODUCING ETHYLENE WHICH COMPRISES HEATING A STREAM OF ETHANE TO A TEMPERATURE SUFFICIENTLY HIGH TO CONVERT AT LAST A PORTION OF THE ETHANE TO ETHYLENE COOLING THE RESULTING PRODUCTS AND PASSING SAME TO A FIRST ABSORPTION ZONE, INTRODUCING AN ABSORBENT INTO SAID FIRST ABSORPTION ZONE TO ABSORB SUBSTANTIALLY ALL OF THE COMPONENTS HAVING SIX OR MORE CARBON ATOMS PER MOLECLUE, DIRECTING THE UNABSORBED EFFLUENT FROM SAID FIRST ABSORPTION ZONE TO A SECOND ABSORPTION ZONE, INTRODUCING A HYDROCARBON ABSORBENT INTO SAID SECOND ABSORPTION ZONE WHICH BOILS IN THE RANGE OF APPROXIMATELY 120 TO APPROXIMATELY 190*F. AND RECOVERING THE RICH ABSORBENT FROM SAID SECOND ABSORPTION ZONE, SAID RICH ABSORBENT CONTAINING ETHYLENE.
Claim 2
Independent Claim
112 words
THE METHOD OF PRODUCING ETHYLENE WHICH COMPRISES HEATING A STREAM OF ETHANE TO A TEMPERATURE SUFFICIENTLY HIGH TO CONVERT AT LAST A PORTION OF THE ETHANE TO ETHYLENE COOLING THE RESULTING PRODUCTS AND PASSING SAME TO A FIRST ABSORPTION ZONE, INTRODUCING AN ABSORBENT INTO SAID FIRST ABSORPTION ZONE TO ABSORB SUBSTANTIALLY ALL OF THE COMPONENTS HAVING SIX OR MORE CARBON ATOMS PER MOLECLUE, DIRECTING THE UNABSORBED EFFLUENT FROM SAID FIRST ABSORPTION ZONE TO A SECOND ABSORPTION ZONE, INTRODUCING A HYDROCARBON ABSORBENT INTO SAID SECOND ABSORPTION ZONE WHICH BOILS IN THE RANGE OF APPROXIMATELY 120 TO APPROXIMATELY 190*F. AND RECOVERING THE RICH ABSORBENT FROM SAID SECOND ABSORPTION ZONE, SAID RICH ABSORBENT CONTAINING ETHYLENE.
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |