US2754271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of breaking water-in-oil emulsions
Assignee: Visco Products Co
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Filing: 1951-04-11
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Granted: 1956-07-10
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Expires: 1971-04-11
Abstract
No abstract record available.
Inventors
- 👤 Willard H Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:27
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A PROCESS OF BREAKING WATER-IN-OIL EMULSIONS WHICH COMPRISES TREATING SUCH EMULSIONS WITH AN ADDITION PRODUCT OF AN ALIPHATIC DIHYDRIC ALCOHOL HAVING TWO TERMINAL HYDROXYL GROUPS CONNECTED TO DIFFERENT CARBON ATOMS AND HAVING NOT MORE THAN SIX CARBON ATOMS AND AN ALKYLENE OXIDE FROM THE GROUP CONSISTING OF 1,2-PROPYLENE OXIDE AND BOTH ETHYLENE OXIDE AND 1,2-PROPYLENE OXIDE CONTAINING AT LEAST 1/3 PART BY WEIGHT OF 1,2-PROPYLENE OXIDE PER PART OF ETHYLENE OXIDE AND NOT MORE THAN 3 PARTS BY WEIGHT OF ETHYLENE OXIDE PER PART OF 1,2-PROPYLENE OXIDE, THE AVERAGE MOLECULAR WEIGHT ATTRIBUTABLE TO SAID OXIDES BEING AT LEAST 1000 WHERE SAID OXIDES ARE BOTH ETHYLENE OXIDE AND 1,2-PROPYLENE OXIDE AND AT LEAST 1200 WHERE SAID OXIDE IS SOLELY 1,2-PROPYLENE OXIDE, SAID ADDITION PRODUCT HAVING TWO TERMINAL HYDROXYL GROUPS ATTACHED TO DIFFERENT CARBON ATOMS.
Claim 2
Dependent Claim
133 words
A PROCESS OF BREAKING WATER-IN-OIL EMULSIONS WHICH COMPRISES TREATING SUCH EMULSIONS WITH AN ADDITION PRODUCT OF AN ALIPHATIC DIHYDRIC ALCOHOL HAVING TWO TERMINAL HYDROXYL GROUPS CONNECTED TO DIFFERENT CARBON ATOMS AND HAVING NOT MORE THAN SIX CARBON ATOMS AND AN ALKYLENE OXIDE FROM THE GROUP CONSISTING OF 1,2-PROPYLENE OXIDE AND BOTH ETHYLENE OXIDE AND 1,2-PROPYLENE OXIDE CONTAINING AT LEAST 1/3 PART BY WEIGHT OF 1,2-PROPYLENE OXIDE PER PART OF ETHYLENE OXIDE AND NOT MORE THAN 3 PARTS BY WEIGHT OF ETHYLENE OXIDE PER PART OF 1,2-PROPYLENE OXIDE, THE AVERAGE MOLECULAR WEIGHT ATTRIBUTABLE TO SAID OXIDES BEING AT LEAST 1000 WHERE SAID OXIDES ARE BOTH ETHYLENE OXIDE AND 1,2-PROPYLENE OXIDE AND AT LEAST 1200 WHERE SAID OXIDE IS SOLELY 1,2-PROPYLENE OXIDE, SAID ADDITION PRODUCT HAVING TWO TERMINAL HYDROXYL GROUPS ATTACHED TO DIFFERENT CARBON ATOMS.
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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |