US2659453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of acetylene from gaseous mixtures by glycolonitrile
Assignee: Phillips Petroleum Co
•
Filing: 1948-12-20
•
Granted: 1953-11-17
•
Expires: 1968-12-20
Abstract
No abstract record available.
Inventors
- 👤 Sam P Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:58
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD FOR SEPARATING ACETYLENE FROM ADMIXTURE WITH GASES WITH WHICH ACETYLENE IS NORMALLY PRODUCED COMPRISING CONTACTING SAID ADMIXTURE OF GASES WITH A REAGENT COMPRISING AN AQUEOUS SOLUTION OF GLYCOLONITRILE ACIDIFIED WITH A NONVOLATILE MINERAL ACID TO A PH OF 2 1/2 TO 3, SEPARATING THE RESULTING SOLUTION FROM THE GASES AND RECOVERING ACETYLENE FROM SAID RESULTING SOLUTION.
Claim 2
Independent Claim
58 words
A METHOD FOR SEPARATING ACETYLENE FROM ADMIXTURE WITH GASES WITH WHICH ACETYLENE IS NORMALLY PRODUCED COMPRISING CONTACTING SAID ADMIXTURE OF GASES WITH A REAGENT COMPRISING AN AQUEOUS SOLUTION OF GLYCOLONITRILE ACIDIFIED WITH A NONVOLATILE MINERAL ACID TO A PH OF 2 1/2 TO 3, SEPARATING THE RESULTING SOLUTION FROM THE GASES AND RECOVERING ACETYLENE FROM SAID RESULTING SOLUTION.
References Cited (Backward Citations)
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Cited
GB331610A
Cited
GB400054A
Cited
US1965100A
Cited
US1946489A
Cited
US2217429A
Cited
US2371908A
Cited
GB548733A
Cited
GB608091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |