Patent US2868327A successfully refreshed from Google Patents.
US2868327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetylene recovery process
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-04-09
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Granted: 1959-01-13
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Expires: 1977-04-09
Abstract
No abstract record available.
Inventors
- 👤 Rotzler Ross William
- 👤 John P Hickman
- 👤 William H Collier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:57
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A PROCESS FOR TREATING A SOLUTION OF AN OXYGEN-CONTAINING ORGANIC SOLVENT CONTAINING DISSOLVED ACETYLEN, SAID SOLVENT HAVING A BOILING POINT ABOVE THAT OF WATER, WHICH COMPRISES INTRODUCING SAID SOLUTION INTO THE FIRST OF A SERIES OF DESORBING STAGES, SAID STAGES BEING MAINTAINED UNDER PROGRESSIVELY REDUCED PRESSURES, EACH STAGE BEING MAINTAINED AT A PRESSURE LOWER THAN THE PRESSURE IN THE PRECEDING STAGE, TRANSFERRING SAID SOLUTION FROM THE FIRST STAGE SUCCESSIVELY TO EACH OF THE SUCCEEDING STAGES OF LOWER PRESSURE WHEREBY ACETYLENE GAS IS EVOLVED FROM SAID SOLUTION IN EACH STAGE, ENTRAINING THE GAS EVOLVED IN EACH OF THE STAGES EXCEPT THE FIRST STAGE WITH A HIGH VELOCITY STEAM JET, DISCHARGING THE SAID GAS AND STEAM FROM EACH STAGE RESPECTIVELY INTO SEPARATE VESSELS WHERE SUBSTANTIALLY ALL OF SAID STEAM IS CONDENSED, WITHDRAWING THE GAS FROM EACH OF SAID VESSELS AND DISCHARGING IT RESPECTIVELY INTO THE SOLUTION CONTAINED IN THE STAGE JUST PRECEDING THAT FROM WHICH THE GAS WAS ORIGINALLY ENTRAINED, WITHDRAWING ACETYLENE FROM THE FIRST STAGE AND WITHDRAWING SAID SOLVENT SUBSTANTIALLY FREE OF ACETYLENE FROM THE STAGE OF LOWEST PRESSURE.
Claim 2
Dependent Claim
178 words
A PROCESS FOR TREATING A SOLUTION OF AN OXYGEN-CONTAINING ORGANIC SOLVENT CONTAINING DISSOLVED ACETYLEN, SAID SOLVENT HAVING A BOILING POINT ABOVE THAT OF WATER, WHICH COMPRISES INTRODUCING SAID SOLUTION INTO THE FIRST OF A SERIES OF DESORBING STAGES, SAID STAGES BEING MAINTAINED UNDER PROGRESSIVELY REDUCED PRESSURES, EACH STAGE BEING MAINTAINED AT A PRESSURE LOWER THAN THE PRESSURE IN THE PRECEDING STAGE, TRANSFERRING SAID SOLUTION FROM THE FIRST STAGE SUCCESSIVELY TO EACH OF THE SUCCEEDING STAGES OF LOWER PRESSURE WHEREBY ACETYLENE GAS IS EVOLVED FROM SAID SOLUTION IN EACH STAGE, ENTRAINING THE GAS EVOLVED IN EACH OF THE STAGES EXCEPT THE FIRST STAGE WITH A HIGH VELOCITY STEAM JET, DISCHARGING THE SAID GAS AND STEAM FROM EACH STAGE RESPECTIVELY INTO SEPARATE VESSELS WHERE SUBSTANTIALLY ALL OF SAID STEAM IS CONDENSED, WITHDRAWING THE GAS FROM EACH OF SAID VESSELS AND DISCHARGING IT RESPECTIVELY INTO THE SOLUTION CONTAINED IN THE STAGE JUST PRECEDING THAT FROM WHICH THE GAS WAS ORIGINALLY ENTRAINED, WITHDRAWING ACETYLENE FROM THE FIRST STAGE AND WITHDRAWING SAID SOLVENT SUBSTANTIALLY FREE OF ACETYLENE FROM THE STAGE OF LOWEST PRESSURE.
References Cited (Backward Citations)
US2762453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |