|
| US4005020 | 19. Juli 1973 | 25. Jan. 1977 | Petrolite Corporation | Paraffin removing compositions |
| US4646837 | 24. Sept. 1985 | 3. März 1987 | Shell Oil Company | Process for removal of wax deposits |
| US4755230 | 10. Apr. 1987 | 5. Juli 1988 | Baker Oil Tools, Inc. | Method of and composition for removing paraffin deposits from hydrocarbon transmission conduits |
| US6831043 | 31. Jan. 2002 | 14. Dez. 2004 | M-I LLC | High performance water based drilling mud and method of use |
| US7084092 | 25. Aug. 2003 | 1. Aug. 2006 | M-I L.L.C. | Shale hydration inhibition agent and method of use |
| US7250390 | 9. Dez. 2004 | 31. Juli 2007 | M-I L.L.C. | High performance water based drilling fluids and method of use |
| US7481276 | 12. Mai 2006 | 27. Jan. 2009 | BJ Services Company | Method of inhibiting and/or preventing corrosion in oilfield treatment applications |
| US7624805 | 29. Dez. 2008 | 1. Dez. 2009 | BJ Services Company | Method of inhibiting corrosion in a conduit |