US2499368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical manufacture
Assignee: Baker Petrolite LLC
•
Filing: 1948-02-16
•
Granted: 1950-03-07
•
Expires: 1968-02-16
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Keiser Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:35
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 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 A HYDROPHILE OXYALKYLATED 2,4,6 C1- TO C24- HYDROCARBON SUBSTITUTED MONOCYCLIC PHENOLC1- TO C8- ALDEHYDE RESIN IN WHICH THE RATIO OF OXYALKYLENE GROUPS TO PHENOLIC NUCLEI IS AT LEAST 2:1 AND THE ALKYLENE RADICALS OF THE OXYALKYLENE GROUPS ARE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, BUTYLENE, HYDROXYPROPYLENE AND HYROXYBUTYLENE RADICALS.
Claim 2
Dependent Claim
73 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 A HYDROPHILE OXYALKYLATED 2,4,6 C1- TO C24- HYDROCARBON SUBSTITUTED MONOCYCLIC PHENOLC1- TO C8- ALDEHYDE RESIN IN WHICH THE RATIO OF OXYALKYLENE GROUPS TO PHENOLIC NUCLEI IS AT LEAST 2:1 AND THE ALKYLENE RADICALS OF THE OXYALKYLENE GROUPS ARE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, BUTYLENE, HYDROXYPROPYLENE AND HYROXYBUTYLENE RADICALS.
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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) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |