Weintritt; Donald J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Weintritt; Donald J..The latest application filed is for "drilling fluid lubricant and method of use".
- Weintritt; Donald J. - Lafayette LA
| Patent | Date |
|---|---|
| Method of making graphite-coated particulate materials Grant 7,666,469 - Weintritt , et al. February 23, 2 | 2010-02-23 |
| Drilling Fluid Lubricant And Method Of Use App 20090075847 - Wawrzos; Frank A. ; et al. | 2009-03-19 |
| Method Of Making Graphite-coated Particulate Materials App 20080248308 - Weintritt; Donald J. ; et al. | 2008-10-09 |
| Graphite-coated particulate materials Grant 7,402,338 - Weintritt , et al. July 22, 2 | 2008-07-22 |
| Graphite coating of particulate materials App 20070054121 - Weintritt; Donald J. ; et al. | 2007-03-08 |
| Drilling fluid loss prevention and lubrication additive Grant 5,826,669 - Zaleski , et al. October 27, 1 | 1998-10-27 |
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