Stephenson; William K.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stephenson; William K..The latest application filed is for "method of clarifying oily waste water".
- Stephenson; William K. - Sugar Land TX
- Stephenson; William K. - Sugarland TX
| Patent | Date |
|---|---|
| Method of clarifying oily waste water Grant 7,431,845 - Manek , et al. October 7, 2 | 2008-10-07 |
| Method of clarifying oily waste water App 20060289359 - Manek; Maria B. ; et al. | 2006-12-28 |
| Desalting adjunct chemistry Grant 6,120,678 - Stephenson , et al. September 19, 2 | 2000-09-19 |
| Alkoxylated vinyl polymer demulsifiers Grant 5,196,486 - Stephenson March 23, 1 | 1993-03-23 |
| Asphaltene dispersants - inhibitors Grant 5,073,248 - Stephenson , et al. December 17, 1 | 1991-12-17 |
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