US2599752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling fluids
Assignee: Union Oil Company of California
•
Filing: 1949-02-03
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Granted: 1952-06-10
•
Expires: 1969-02-03
Abstract
No abstract record available.
Inventors
- 👤 Paul W Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:27
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/32; Y; Y10; Y10S; Y10S507/00; Y10S507/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A SUBSTANTIALLY NON-AQUEOUS COMPOSITION OF MATTER ADAPTED FOR USE IN DRILLING WELLS CONSISTING ESSENTIALLY OF A MINERAL OIL BASE HAVIN DISPERSED THEREIN BETWEEN ABOUT 1 AND ABOUT 10 PER CENT BY WEIGHT OF A SOLID WATER-SOLUBLE ALKAABOUT 10 PER CENT BY WEIGHT OF AN OIL-SOLUBLE METAL SOAP DISPERSING AGENT CAPABLE OF MAINTAINING SAID ALKALINE EARTH METAL SALT UNIFORMLY DISPERSED IN SAID MINERAL OIL BASE.
Claim 2
Dependent Claim
64 words
A SUBSTANTIALLY NON-AQUEOUS COMPOSITION OF MATTER ADAPTED FOR USE IN DRILLING WELLS CONSISTING ESSENTIALLY OF A MINERAL OIL BASE HAVIN DISPERSED THEREIN BETWEEN ABOUT 1 AND ABOUT 10 PER CENT BY WEIGHT OF A SOLID WATER-SOLUBLE ALKAABOUT 10 PER CENT BY WEIGHT OF AN OIL-SOLUBLE METAL SOAP DISPERSING AGENT CAPABLE OF MAINTAINING SAID ALKALINE EARTH METAL SALT UNIFORMLY DISPERSED IN SAID MINERAL OIL BASE.
References Cited (Backward Citations)
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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) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |