US2662859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions and process for emulsion breaking
Assignee: Visco Products Co
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Filing: 1949-06-15
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Granted: 1953-12-15
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Expires: 1969-06-15
Abstract
No abstract record available.
Inventors
- 👤 Willard H Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:44
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/329; C08G65/337; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS OF BREAKING WATER-IN-OIL EMULSIONS WHICH COMPRISES TREATING SUCH EMULSIONS WITH A DIETHER OF A POLYOXYALKYLENE ALIPHATIC DIOL IN WHICH THE MAJOR PROPORTION OF THE AVERAGE MOLECULAR WEIGHT IS ATTRIBUTABLE TO OXYALKYLENE GROUPS FROM THE GROUP CONSISTING OF OXYPROPYLENE GROUPS AND MIXED OXYETHYLENE AND OXYPROPYLENE GROUPS HAVING A WEIGHT RATIO OF OXYTHYLENE TO OXYPROPYLENE NOT EXCEEDING 4:1 AND THE AVERAGE MOLECULAR WEIGHT IS AT LEAST 1000 WHERE THE OXYALKYLENE GROUPS ARE BOTH OXYETHYLENE AND OXYPROPYLENE AND AT LEAST 1350 WHERE THE OXYALKYLENE GROUPS ARE SOLELY OXYPROPYLENE GROUPS.
Claim 2
Dependent Claim
88 words
A PROCESS OF BREAKING WATER-IN-OIL EMULSIONS WHICH COMPRISES TREATING SUCH EMULSIONS WITH A DIETHER OF A POLYOXYALKYLENE ALIPHATIC DIOL IN WHICH THE MAJOR PROPORTION OF THE AVERAGE MOLECULAR WEIGHT IS ATTRIBUTABLE TO OXYALKYLENE GROUPS FROM THE GROUP CONSISTING OF OXYPROPYLENE GROUPS AND MIXED OXYETHYLENE AND OXYPROPYLENE GROUPS HAVING A WEIGHT RATIO OF OXYTHYLENE TO OXYPROPYLENE NOT EXCEEDING 4:1 AND THE AVERAGE MOLECULAR WEIGHT IS AT LEAST 1000 WHERE THE OXYALKYLENE GROUPS ARE BOTH OXYETHYLENE AND OXYPROPYLENE AND AT LEAST 1350 WHERE THE OXYALKYLENE GROUPS ARE SOLELY OXYPROPYLENE GROUPS.
References Cited (Backward Citations)
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US2330474A
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US2430002A
Cited
US2481278A
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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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |