US2512435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsions
Assignee: Shell Development Co
•
Filing: 1948-01-03
•
Granted: 1950-06-20
•
Expires: 1968-01-03
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Reginald Gordon
- 👤 Tait Harold Cecil
- 👤 Gilbert Cedric Lansdale
- 👤 David Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:15
CPC Classifications
C; C09; C09K; C09K23/00; C09K23/017; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
A MINERAL OIL CONCENTRATE CAPABLE OF FORMING A STABLE OIL-IN-WATER EMULSION, SAID CONCENTRATE COMPRISING FROM 50 TO 80% OF MINERAL OIL AND FROM 50 TO 20% OF A MIXTURE OF (A) WATERSOLUBLE ALKALI METAL SALT OF A SECONDARY ALKYL SULFATE CONTAINING FROM 10 TO 18 CARBON ATOMS AND (B) AND ALCOHOL HAVING HYDROPHILIC AND OLEOPHILIC PROPERTIES IN ADMIXTURE WITH (C) A PETROLEUM-ETHER SOLUBLE FRACTION OF OIL-SOLUBLE SODIUM PETROLEUM SULFONATE WHICH IS FREE FROM PETROLEUM-ETHER INSOLUBLE OIL-SOLUBLE SODIUM PETROLEUM SULFONATE, THE WEIGHT RATIO OF THE SUM OF (A) AND (B) TO (C) BEING BETWEEN 94:6 TO 50:50, RESPECTIVELY.
References Cited (Backward Citations)
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Cited
US2049043A
Cited
US2088019A
Cited
US2314450A
Cited
US2307744A
Cited
US2391087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |