US2697692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion mud
Assignee: Standard Oil Development Co
•
Filing: 1949-09-24
•
Granted: 1954-12-21
•
Expires: 1969-09-24
Abstract
No abstract record available.
Inventors
- 👤 Richard A Salathiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:59
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/26; C09K8/28; Y; Y10; Y10S; Y10S516/00; Y10S516/905; Y10S516/917; Y10S516/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
AN OIL-IN-WATER EMULSION DRILLING FLUID COMPRISING ABOUT 2.0 TO 35% BY WEIGHT OF A HYDROCARBON OIL, 1.5% TO 7.0% BY WEIGHT OF AN ALKALI METAL SOAP OF A CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF A ROSIN ACID AND A FATTY ACID HAVING AT LEAST 16 CARBON ATOMS BUT NOT MORE THAN 19 CARBON ATOMS PER MOLECULE, 0.5% TO 3.0% BY WEIGHT OF AN ALIPHATIC ALCOHOL HAVING AT LEAST 3 CARBON
Claim 2
Dependent Claim
72 words
AN OIL-IN-WATER EMULSION DRILLING FLUID COMPRISING ABOUT 2.0 TO 35% BY WEIGHT OF A HYDROCARBON OIL, 1.5% TO 7.0% BY WEIGHT OF AN ALKALI METAL SOAP OF A CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF A ROSIN ACID AND A FATTY ACID HAVING AT LEAST 16 CARBON ATOMS BUT NOT MORE THAN 19 CARBON ATOMS PER MOLECULE, 0.5% TO 3.0% BY WEIGHT OF AN ALIPHATIC ALCOHOL HAVING AT LEAST 3 CARBON
References Cited (Backward Citations)
US2158374A
Cited
US2265799A
Cited
US2380156A
Cited
US2391087A
Cited
US2430039A
Cited
US2476845A
Cited
US2488304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |