US2790777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of breaking petroleum emulsions and compositions therefor
Assignee: Visco Products Co
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Filing: 1952-02-16
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Granted: 1957-04-30
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Expires: 1972-02-16
Abstract
No abstract record available.
Inventors
- 👤 Willard H Kirkpatrick
- 👤 Walker Alice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:27
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS OF BREAKING WATER-IN-OIL EMULSIONS WHICH COMPRISES TREATING SUCH EMULSIONS WITH AN ORGANIC ESTER OF AN ORGANIC CARBOXYLIC ACID AND A POLYOXYALKYLENE OXYSILANE HAVING A HYDROXY GROUP CONNECTED TO A POLYOXYALKYLENE CHAIN CAPABLE OF REACTING WITH SAID ORGANIC CARBOXYLIC ACID, THERE BEING 1 TO 6 CARBON ATOMS IN EACH OXYALKYLENE GROUP OF SAID ESTER AND NOT MORE THAN 4 POLYOXYALKYLENE CHAINS ATTACHED TO EACH SILICON, ATOM, THE MOLECULAR WEIGHT OF SAID ESTER ATTRIBUTABLE TO SAID OXYALKYLENE GROUPS BEING AT LEAST 1500.
Claim 2
Dependent Claim
82 words
A PROCESS OF BREAKING WATER-IN-OIL EMULSIONS WHICH COMPRISES TREATING SUCH EMULSIONS WITH AN ORGANIC ESTER OF AN ORGANIC CARBOXYLIC ACID AND A POLYOXYALKYLENE OXYSILANE HAVING A HYDROXY GROUP CONNECTED TO A POLYOXYALKYLENE CHAIN CAPABLE OF REACTING WITH SAID ORGANIC CARBOXYLIC ACID, THERE BEING 1 TO 6 CARBON ATOMS IN EACH OXYALKYLENE GROUP OF SAID ESTER AND NOT MORE THAN 4 POLYOXYALKYLENE CHAINS ATTACHED TO EACH SILICON, ATOM, THE MOLECULAR WEIGHT OF SAID ESTER ATTRIBUTABLE TO SAID OXYALKYLENE GROUPS BEING AT LEAST 1500.
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) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |