US2615853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of breaking water-in-oil emulsions
Assignee: Visco Products Co
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Filing: 1948-11-04
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Granted: 1952-10-28
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Expires: 1968-11-04
Abstract
No abstract record available.
Inventors
- 👤 Willard H Kirkpatrick
- 👤 John W Ryznar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:02
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS OF BREAKING WATER-IN-OIL EMULSIONS WHICH COMPRISES TREATING SUCH EMULSIONS WITH AN ALIPHATIC ETHER ALCOHOL CHARACTERIZED BY A POLYOXYALKYLENE GROUP HAVING DIFFERENT TERMINAL GROUPS CONNECTED TO DIFFERENT CARBON ATOMS, ONE OF SAID TERMINAL GROUPS BEING A HYDROXY GROUP AND THE OTHER BEING AN ETHER GROUP, SAID ETHER ALCOHOL HAVING A MOLECULAR WEIGHT OF AT LEAST 1500, EXCLUSIVE OF THE ORGANIC RADICAL OF THE TERMINAL ETHER GROUP, AND BEING FREE FROM IONIZABLE ACIDIC AND SALT-FORMING GROUPS, THE OXYALKYLENE GROUPS IN SAID ETHER ALCOHOL BEING FROM THE GROUP CONSISTING OF OXYETHYLENE AND OXY-1,2-PROPYLENE GROUPS AND THERE BEING AT LEAST 1/3 PART OF 1,2-PROPYLENE OXIDE FOR EACH OF ETHYLENE OXIDE BY WEIGHT.
Claim 2
Dependent Claim
110 words
A PROCESS OF BREAKING WATER-IN-OIL EMULSIONS WHICH COMPRISES TREATING SUCH EMULSIONS WITH AN ALIPHATIC ETHER ALCOHOL CHARACTERIZED BY A POLYOXYALKYLENE GROUP HAVING DIFFERENT TERMINAL GROUPS CONNECTED TO DIFFERENT CARBON ATOMS, ONE OF SAID TERMINAL GROUPS BEING A HYDROXY GROUP AND THE OTHER BEING AN ETHER GROUP, SAID ETHER ALCOHOL HAVING A MOLECULAR WEIGHT OF AT LEAST 1500, EXCLUSIVE OF THE ORGANIC RADICAL OF THE TERMINAL ETHER GROUP, AND BEING FREE FROM IONIZABLE ACIDIC AND SALT-FORMING GROUPS, THE OXYALKYLENE GROUPS IN SAID ETHER ALCOHOL BEING FROM THE GROUP CONSISTING OF OXYETHYLENE AND OXY-1,2-PROPYLENE GROUPS AND THERE BEING AT LEAST 1/3 PART OF 1,2-PROPYLENE OXIDE FOR EACH OF ETHYLENE OXIDE BY WEIGHT.
References Cited (Backward Citations)
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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) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |