US2738860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of acetylene solvents
Assignee: BASF SE
•
Filing: 1952-01-16
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Granted: 1956-03-20
•
Expires: 1972-01-16
Abstract
No abstract record available.
Inventors
- 👤 Lorenz Lothar
- 👤 Chorbacher Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:49
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN THE PROCESS OF SEPARATING ACETYLENE FROM ACETYLENE CONTAINING GAS MIXTURES PRODUCED BY HIGH-TEMPERATURE DECOMPOSITION OF LOW MOLECULAR WEIGHT PARAFFIN HYDROCARBONS, BY ABSORBING ACETYLENE IN AN ALIPHATIC CARBONYL COMPOUND SOLVENT, BEING AT LEAST PARTLY MISCIBLE WITH WATER AND HAVING SELECTIVE ABSORPTION POWER FOR ACETYLENE, RELEASING THE ACETYLENE FROM ITS SOLUTION IN SUCH SOLVENT, AND RECIRCULATING SAID SOLVENT, THE STEPS WHICH COMPRISE WITHDRAWING FROM SAID CIRCULATION AT LEAST PART OF THE SOLVENT, DILUTING IT WITH WATER, REMOVING THEREFROM THE PRECIPITATE FORMED AND RETURNING THE SOLVENT TO THE SEPARATING PROCESS.
Claim 2
Dependent Claim
88 words
IN THE PROCESS OF SEPARATING ACETYLENE FROM ACETYLENE CONTAINING GAS MIXTURES PRODUCED BY HIGH-TEMPERATURE DECOMPOSITION OF LOW MOLECULAR WEIGHT PARAFFIN HYDROCARBONS, BY ABSORBING ACETYLENE IN AN ALIPHATIC CARBONYL COMPOUND SOLVENT, BEING AT LEAST PARTLY MISCIBLE WITH WATER AND HAVING SELECTIVE ABSORPTION POWER FOR ACETYLENE, RELEASING THE ACETYLENE FROM ITS SOLUTION IN SUCH SOLVENT, AND RECIRCULATING SAID SOLVENT, THE STEPS WHICH COMPRISE WITHDRAWING FROM SAID CIRCULATION AT LEAST PART OF THE SOLVENT, DILUTING IT WITH WATER, REMOVING THEREFROM THE PRECIPITATE FORMED AND RETURNING THE SOLVENT TO THE SEPARATING PROCESS.
References Cited (Backward Citations)
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Cited
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Cited
US2426705A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |