US2836635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the treatment of gases containing ethylene
Assignee: Ruhrchemie AG
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Filing: 1955-06-01
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Granted: 1958-05-27
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Expires: 1975-06-01
Abstract
No abstract record available.
Inventors
- 👤 Gothel Herbert
- 👤 Kolling Helmut
- 👤 Roelen Otto
- 👤 Geiser Nikolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:29
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR THE PURIFICATION OF AN ETHYLENE-CON TAINING GAS WHICH COMPRISES SUBJECTING SAID GAS TO THE FOLLOWING SEQUENCE OF STEPS: WASHING THE GAS WITH WATER UNDER PRESSURE; THEREAFTER WASHING THE GAS WITH ALKALI SOLUTION, THEN SELECTIVELY HYDROGENATING THE GAS IN THE PRESENCE OF A CATALYST CONTAINING METALS OF THE 8TH GROUP OF THE PERIODIC TABLE TO REMOVE ACETYLENE FROM THE GAS AND LASTLY DRYING THE GAS, SAID SEQUENCE ALSO INCLUDING; DEPRESSURIZING THE USED WASH WATER AND ADDING THE DISSOLVED GASES RELEASED THEREBY TO GAS ENGERING SAID PURIFICATION SEQUENCE.
Claim 2
Dependent Claim
89 words
A PROCESS FOR THE PURIFICATION OF AN ETHYLENE-CON TAINING GAS WHICH COMPRISES SUBJECTING SAID GAS TO THE FOLLOWING SEQUENCE OF STEPS: WASHING THE GAS WITH WATER UNDER PRESSURE; THEREAFTER WASHING THE GAS WITH ALKALI SOLUTION, THEN SELECTIVELY HYDROGENATING THE GAS IN THE PRESENCE OF A CATALYST CONTAINING METALS OF THE 8TH GROUP OF THE PERIODIC TABLE TO REMOVE ACETYLENE FROM THE GAS AND LASTLY DRYING THE GAS, SAID SEQUENCE ALSO INCLUDING; DEPRESSURIZING THE USED WASH WATER AND ADDING THE DISSOLVED GASES RELEASED THEREBY TO GAS ENGERING SAID PURIFICATION SEQUENCE.
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |