US2671791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the treatment of gases containing ethylene
Assignee: Chempatents Inc
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Filing: 1950-05-09
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Granted: 1954-03-09
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Expires: 1970-05-09
Abstract
No abstract record available.
Inventors
- 👤 Robert B Egbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:16
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; C07D301/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS FOR THE PREPARATION OF A FEED GAS FOR THE OXIDATION OF ETHYLENE AT ELEVATED TEMPERATURES AND PRESSURES FROM GASEOUS STREAMS CONTAINING ETHYLENE, HYDROGEN AND HYDROCARBONS OTHER THAN ETHYLENE COMPRISING SELECTIVELY ABSORBING ETHYLENE FROM THE GASEOUS STREAM WITH A SOLVENT AT SUBSTANTIALLY ATMOSPHERIC TEMPERATURES, AND PASSING A STREAM OF AIR IN THE RATIO OF ABOUT 7 TO 12 MOLS OF AIR TO ONE MOL OF ETHYLENE COUNTER-CURRENT TO THE ENRICHED SOLVENT TO
Claim 2
Dependent Claim
73 words
A PROCESS FOR THE PREPARATION OF A FEED GAS FOR THE OXIDATION OF ETHYLENE AT ELEVATED TEMPERATURES AND PRESSURES FROM GASEOUS STREAMS CONTAINING ETHYLENE, HYDROGEN AND HYDROCARBONS OTHER THAN ETHYLENE COMPRISING SELECTIVELY ABSORBING ETHYLENE FROM THE GASEOUS STREAM WITH A SOLVENT AT SUBSTANTIALLY ATMOSPHERIC TEMPERATURES, AND PASSING A STREAM OF AIR IN THE RATIO OF ABOUT 7 TO 12 MOLS OF AIR TO ONE MOL OF ETHYLENE COUNTER-CURRENT TO THE ENRICHED SOLVENT TO
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) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |