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| Number | Title | Issue Date |
| 5977030 | Method of increasing the LSRV of aqueous fluids and oil-in-water emulsions prepared thereby Disclosed are oil-in-water emulsions containing an aqueous polysaccharide-containing continuous phase, an emulsified oleaginous liquid, and an oligosaccharide mixture composed of sugar units selected from the group consisting of arabinose, mannose, galact... | 11/02/1999 |
| 4960740 | Organophilic clay compositions Organophilic clays which are effective fluid loss control additives for oil base well-working fluids are prepared from a swelling smectite clay and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most p... | 10/02/1990 |
| 4382868 | Organophilic clay gellants The invention provides methods of preparing organophilic clays having enhanced dispersibility in organic liquids, the organophilic clay containing gellants, and methods of increasing the viscosity of organic liquids utilizing these gellants.... | 05/10/1983 |
