US2863527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the purification of gases
Assignee: GEA Group AG
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Filing: 1955-07-27
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Granted: 1958-12-09
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Expires: 1975-07-27
Abstract
No abstract record available.
Inventors
- 👤 Herbert Wilhelm
- 👤 Becker Rudolf
- 👤 Danulat Hedwig Gertrud
- 👤 Danulat Hans Friedrich
- 👤 Danulat Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:14
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
PROCESS FOR THE PURIFICATION OF COMBUSTIBLE GASES COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF CARBON MONOXIDE, HYDROGEN, METHANE AND MIXTURES THEREOF, AND CONTAINING AS IMPURITIES HYDROGEN SULFIDE WITH A MEMBER OF THE GROUP CONSISTING OF ORGANIC SULFUR COMPOUNDS, GUM AND RESIN FORMERS, CYANOGEN COMPOUNDS, CARBON DIOXIDE, AND MIXTURES THEREOF, WHICH COMPRISES CONTACTNG SUCH AS A GAS AT A TEMPERATURE OF BELOW ABOUT -10*C. AT A PRESSURE OF AT LEAST 2 ATMOSPHERES WITH A POLAR ORGANIC WASHING LIQUID SUBSTANTIALLY CHEMICALLY NON-REACTIVE WITH THE GAS COMPONENTS AND HAVING A FREEZING POINT BELOW SAID CONTACTING TEMPERATURE TO THEREBY REMOVE A SUBSTANTIAL PORTION OF SAID HYDROGEN SULFIDE AND SAID SECOND MENTIONED GROUP MEMBER, AND RECOVERING A PURIFIED GAS HAVING A SUBSTANTIALLY REDUCED CONTENT OF SAID IMPURITIES.
Claim 2
Dependent Claim
124 words
PROCESS FOR THE PURIFICATION OF COMBUSTIBLE GASES COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF CARBON MONOXIDE, HYDROGEN, METHANE AND MIXTURES THEREOF, AND CONTAINING AS IMPURITIES HYDROGEN SULFIDE WITH A MEMBER OF THE GROUP CONSISTING OF ORGANIC SULFUR COMPOUNDS, GUM AND RESIN FORMERS, CYANOGEN COMPOUNDS, CARBON DIOXIDE, AND MIXTURES THEREOF, WHICH COMPRISES CONTACTNG SUCH AS A GAS AT A TEMPERATURE OF BELOW ABOUT -10*C. AT A PRESSURE OF AT LEAST 2 ATMOSPHERES WITH A POLAR ORGANIC WASHING LIQUID SUBSTANTIALLY CHEMICALLY NON-REACTIVE WITH THE GAS COMPONENTS AND HAVING A FREEZING POINT BELOW SAID CONTACTING TEMPERATURE TO THEREBY REMOVE A SUBSTANTIAL PORTION OF SAID HYDROGEN SULFIDE AND SAID SECOND MENTIONED GROUP MEMBER, AND RECOVERING A PURIFIED GAS HAVING A SUBSTANTIALLY REDUCED CONTENT OF SAID IMPURITIES.
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |