US2646406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface active compounds
Assignee: Cities Service Oil Co
•
Filing: 1950-02-16
•
Granted: 1953-07-21
•
Expires: 1970-02-16
Abstract
No abstract record available.
Inventors
- 👤 William B Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE PROCESS OF RESOLVING EMULSION COMPRISING SUBJECTING A PETROLEUM WATER-IN-OIL EMULSION TO THE ACTION OF A SMALL BUT SUFFICIENT QUANTITY OF A HEAT-POLYMERIZED BASIC HYDROXY MONO AMINE NEUTRALIZED TO A METHYL ORANGE END POINT WITH A HIGHER MOLECULAR WEIGHT ALIPHATIC HYDROXY ACID.
Claim 2
Dependent Claim
42 words
THE PROCESS OF RESOLVING EMULSION COMPRISING SUBJECTING A PETROLEUM WATER-IN-OIL EMULSION TO THE ACTION OF A SMALL BUT SUFFICIENT QUANTITY OF A HEAT-POLYMERIZED BASIC HYDROXY MONO AMINE NEUTRALIZED TO A METHYL ORANGE END POINT WITH A HIGHER MOLECULAR WEIGHT ALIPHATIC HYDROXY ACID.
References Cited (Backward Citations)
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US2231758A
Cited
US2262741A
Cited
US2246856A
Cited
US2309935A
Cited
US2440349A
Cited
US2468181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |