Patent US2695884A successfully refreshed from Google Patents.
US2695884A
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Process for breaking petroleum emulsions
Assignee: Baker Petrolite LLC
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Filing: 1952-04-10
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Granted: 1954-11-30
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Expires: 1972-04-10
Abstract
No abstract record available.
Inventors
- 👤 Smith Alvin Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:36
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04; C07; C07D; C07D233/00; C07D233/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR BREAKING PETROLEUM EMULSIONS OF THE WATER-IN-OIL TYPE CHARACTERIZED BY SUBJECTING THE EMULSION TO THE ACTION OF A DEMULSIFIER INCLUDING HYDROPHILE SYNTHETIC PRODUCTS; SAID HYDROPHILE SYNTHETIC PRODUCTS BEING OBTAINED BY REACTION BETWEEN (A) A POLYCARBOXY ACID, AND (B) A HIGHLY OXYPROPYLATED SUBSTITUTED RING COMPOUND SELECTED FROM THE CLASS CONSISTING OF
Claim 2
Dependent Claim
52 words
A PROCESS FOR BREAKING PETROLEUM EMULSIONS OF THE WATER-IN-OIL TYPE CHARACTERIZED BY SUBJECTING THE EMULSION TO THE ACTION OF A DEMULSIFIER INCLUDING HYDROPHILE SYNTHETIC PRODUCTS; SAID HYDROPHILE SYNTHETIC PRODUCTS BEING OBTAINED BY REACTION BETWEEN (A) A POLYCARBOXY ACID, AND (B) A HIGHLY OXYPROPYLATED SUBSTITUTED RING COMPOUND SELECTED FROM THE CLASS CONSISTING OF
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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) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |