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US3640894A
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Compositions and processes for breaking petroleum emulsions
Assignee: ChampionX LLC
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Filing: 1970-07-09
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Granted: 1972-02-08
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Expires: 1990-07-09
Abstract
Abstract COMPOSITIONS OF MATTER AND A PROCESS BREAKING WATERIN-OIL PETROLEUM EMULSIONS THEREWITH, WHICH COMPOSITIONS COMPRISES A SBUSTANTIALLY WATER-INSOLUBLE AT LEAST PARTIALLY OIL-SOLUBLE PRODUCT FORMED BY THE COMBINATION OF (A) A DIISOCYANATE AND A POLYOXYALKYLATED COMPOUND AND (B) POLYOXYALKYLATED ALKYL PHENOLFORMALDEHYDE POLYCONDENSATES IS DISCLOSED.
Inventors
- 👤 Ronald G Sampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:14
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |