US2871979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration of gases containing acetylene and removal of acetylene therefrom
Assignee: Phillips Petroleum Co
•
Filing: 1955-06-23
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Granted: 1959-02-03
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Expires: 1975-06-23
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Scofield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:00
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A METHOD FOR DEHYDRATING A HYDROCARBON GAS CONTAINING ACETYLENE AND WATER WHICH COMPRISES CONTACTING SAID GAS WITH A DIMETHYLFORMAMIDE DEHYDRATING SOLVENT CONTAINING FROM ABOUT 14 TO 50 MOL PERCENT OF WATER AT A TEMPERATURE BELOW 0* F. AND THEREAFTER SEPARATING SAID SOLVENT FROM SAID GAS.
Claim 2
Independent Claim
45 words
A METHOD FOR DEHYDRATING A HYDROCARBON GAS CONTAINING ACETYLENE AND WATER WHICH COMPRISES CONTACTING SAID GAS WITH A DIMETHYLFORMAMIDE DEHYDRATING SOLVENT CONTAINING FROM ABOUT 14 TO 50 MOL PERCENT OF WATER AT A TEMPERATURE BELOW 0* F. AND THEREAFTER SEPARATING SAID SOLVENT FROM SAID GAS.
References Cited (Backward Citations)
US2714940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |