US2715947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical purification process for acetylenes
Assignee: Monsanto Chemicals Ltd
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Filing: 1951-11-01
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Granted: 1955-08-23
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Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 Wayne E Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:51
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN THE PROCESS FOR REMOVING ACETYLENE POLYMERS FROM AN ORGANIC OXYGEN-CONTAINING SOLVENT CONTAINING SAID POLYMERS AND DISSOLVED WATER, SAID SOLVENT HAVING A BOILING POINT ABOVE THAT OF WATER, THE STEPS OF VAPORIZING WATER SIMULTANEOUSLY WITH SAID ACETYLENE POLYMERS FROM SAID SOLVENT, CONDENSING AT LEAST A PART OF SAID WATER AND THEN MIXING SAID ACETYLENE POLMERS WITH A HIGH VELOCITY JET OF COMBUSTIBLE GAS.
Claim 2
Dependent Claim
63 words
IN THE PROCESS FOR REMOVING ACETYLENE POLYMERS FROM AN ORGANIC OXYGEN-CONTAINING SOLVENT CONTAINING SAID POLYMERS AND DISSOLVED WATER, SAID SOLVENT HAVING A BOILING POINT ABOVE THAT OF WATER, THE STEPS OF VAPORIZING WATER SIMULTANEOUSLY WITH SAID ACETYLENE POLYMERS FROM SAID SOLVENT, CONDENSING AT LEAST A PART OF SAID WATER AND THEN MIXING SAID ACETYLENE POLMERS WITH A HIGH VELOCITY JET OF COMBUSTIBLE GAS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |