US2610704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of ethane and ethylene by extractive distillation
Assignee: Standard Oil Development Co
•
Filing: 1947-07-03
•
Granted: 1952-09-16
•
Expires: 1967-07-03
Abstract
No abstract record available.
Inventors
- 👤 John A Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:27
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR SEPARATING ETHYLENE AND ETHANE FROM A GASEOUS MIXTURE CONTAINING HYDROGEN, METHANE, ETHYLENE AND ETHANE WHICH COMPRISES SUBJECTING THE GASEOUS MIXTURE TO EXTRACTIVE DISTILLATION AT A PRESSURE OF 200 TO 300 P. S. I. IN AN EXTRACTIVE DISTILLATION ZONE IN THE PRESENCE OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF ACETONE, FURFURAL AND WATER SOLU-
Claim 2
Dependent Claim
58 words
A PROCESS FOR SEPARATING ETHYLENE AND ETHANE FROM A GASEOUS MIXTURE CONTAINING HYDROGEN, METHANE, ETHYLENE AND ETHANE WHICH COMPRISES SUBJECTING THE GASEOUS MIXTURE TO EXTRACTIVE DISTILLATION AT A PRESSURE OF 200 TO 300 P. S. I. IN AN EXTRACTIVE DISTILLATION ZONE IN THE PRESENCE OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF ACETONE, FURFURAL AND WATER SOLU-
References Cited (Backward Citations)
US2434796A
Cited
US1422184A
Cited
US1422183A
Cited
US1938991A
Cited
US2236966A
Cited
US2190025A
Cited
US2288461A
Cited
US2344969A
Cited
US2374104A
Cited
US2383547A
Cited
US2374984A
Cited
US2325379A
Cited
US2486543A
Cited
US2407997A
Cited
US2542520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |