US2589949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling drilling fluid viscosity
Assignee: Standard Oil Development Co
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Filing: 1949-12-15
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Granted: 1952-03-18
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Expires: 1969-12-15
Abstract
No abstract record available.
Inventors
- 👤 Victor G Meadors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:02
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/22; C09K8/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
A DRILLING FLUID COMPRISING AN AQUEOUS SUS
Claim 2
Dependent Claim
7 words
A DRILLING FLUID COMPRISING AN AQUEOUS SUS
Claim 3
Dependent Claim
98 words
THE COMPOSITION WHICH COMPRISES AN ACIDCOAGULABLE AQUEOUS DISPERSION OF POLYMERIC ORPENSION OF A CLAY AND FROM ABOUT 0.1% TO ABOUT 5% OF A POLYETHER HAVING AT LEAST TWO ETHER LINKGANIC MATERIAL IN COMBINATION WITH A HALOGENATED HYDROCARBON FREE FROM ETHYLENIC UNSATURAAGES SEPARATED BY AT LEAST TWO CARBON ATOMS, SAID POLYETHER BEING SELECTED FROM THE CLASS CONSISTING TION CONTAINING A MAXIMUM OF 19 CARBON ATOMS AND HAVING A HALOGEN ATOM JOINED DIRECTLY TO A OF DIOXANE AND POLYETHYLENE GLYCOLS. TERTIAR CARBON ATOM, SAID HALOGENATED HYDROCARBON AMOUNTING TO FROM 3% TO 20% OF THE WEIGHT OF SAID POLYMERIC ORGANIC MATERIAL.
Claim 4
Dependent Claim
98 words
THE COMPOSITION WHICH COMPRISES AN ACIDCOAGULABLE AQUEOUS DISPERSION OF POLYMERIC ORPENSION OF A CLAY AND FROM ABOUT 0.1% TO ABOUT 5% OF A POLYETHER HAVING AT LEAST TWO ETHER LINKGANIC MATERIAL IN COMBINATION WITH A HALOGENATED HYDROCARBON FREE FROM ETHYLENIC UNSATURAAGES SEPARATED BY AT LEAST TWO CARBON ATOMS, SAID POLYETHER BEING SELECTED FROM THE CLASS CONSISTING TION CONTAINING A MAXIMUM OF 19 CARBON ATOMS AND HAVING A HALOGEN ATOM JOINED DIRECTLY TO A OF DIOXANE AND POLYETHYLENE GLYCOLS. TERTIAR CARBON ATOM, SAID HALOGENATED HYDROCARBON AMOUNTING TO FROM 3% TO 20% OF THE WEIGHT OF SAID POLYMERIC ORGANIC MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |