US2943061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demulsifying compositions and process
Assignee: Visco Products Co
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Filing: 1956-03-19
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Granted: 1960-06-28
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Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 Willard H Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:14
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
PROCESS OF RESOLVING WATER-IN OIL EMULSIONS INTO THEIR COMPONENTS WHICH COMPRISES TREATING SUCH EMULSIONS WITH AN ESTER OF AN ORGANIC CARBOXY ACID AND AN ORGANIC NON-ACIDIC HYDROXY COMPOUND HAVING A HYDROXYL GROUP ATTACHED TO AN ACYCLIC CARBON ATOM AND ESTERIFIED WITH SAID CARBOXY ACID AND FURTHER CHARACTERIZED BY HAVING OXYALKYLENE GROUPS FROM THE CLASS CONSISTING OF OXYPROPYLENE AND BOTH OXYETHYLENE AND OXYPROPYLENE IN A WEIGHT RATIO OF OXYETHYLENE TO OXYPROPYLENE NOT EXCEEDING 4:1 IN THE SAME MOLECULE FORM THE MAJOR PROPORTION OF THE AVERAGE MOLECULAR WEIGHT OF SAID ESTER, SAID ESTER BEING MONOMERIC EXCLUSIVE OF SAID OXYALKYLENE GROUPS AND CONTAINING ONLY ONE LONG UNINTERRUPTED OXYALKYLENE CHAIN COMPOSED OF SAID OXYALKYLENE GROUPS IN WHICH THE MOLECULAR WEIGHT ATTRIBUTABLE TO SAID OXYALKYLENE GROUPS IN SAID LONG CHAIN IS AT LEAST 1000 WHEN THE OXYALKYLENE GROUPS ARE BOTH OXYALKYLENE AND OXYPROPYLENE AND AT LEAST 1200 WHERE THE OXYALKYLENE GROUPS ARE SOLELY OXYPROPYLENE GROUPS.
Claim 2
Dependent Claim
150 words
PROCESS OF RESOLVING WATER-IN OIL EMULSIONS INTO THEIR COMPONENTS WHICH COMPRISES TREATING SUCH EMULSIONS WITH AN ESTER OF AN ORGANIC CARBOXY ACID AND AN ORGANIC NON-ACIDIC HYDROXY COMPOUND HAVING A HYDROXYL GROUP ATTACHED TO AN ACYCLIC CARBON ATOM AND ESTERIFIED WITH SAID CARBOXY ACID AND FURTHER CHARACTERIZED BY HAVING OXYALKYLENE GROUPS FROM THE CLASS CONSISTING OF OXYPROPYLENE AND BOTH OXYETHYLENE AND OXYPROPYLENE IN A WEIGHT RATIO OF OXYETHYLENE TO OXYPROPYLENE NOT EXCEEDING 4:1 IN THE SAME MOLECULE FORM THE MAJOR PROPORTION OF THE AVERAGE MOLECULAR WEIGHT OF SAID ESTER, SAID ESTER BEING MONOMERIC EXCLUSIVE OF SAID OXYALKYLENE GROUPS AND CONTAINING ONLY ONE LONG UNINTERRUPTED OXYALKYLENE CHAIN COMPOSED OF SAID OXYALKYLENE GROUPS IN WHICH THE MOLECULAR WEIGHT ATTRIBUTABLE TO SAID OXYALKYLENE GROUPS IN SAID LONG CHAIN IS AT LEAST 1000 WHEN THE OXYALKYLENE GROUPS ARE BOTH OXYALKYLENE AND OXYPROPYLENE AND AT LEAST 1200 WHERE THE OXYALKYLENE GROUPS ARE SOLELY OXYPROPYLENE GROUPS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |