Sigwebela; Bulelani Humphrey
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sigwebela; Bulelani Humphrey.The latest application filed is for "impregnation process for catalysts".
- Sigwebela; Bulelani Humphrey - Sasolburg ZA
| Patent | Date |
|---|---|
| Impregnation process for catalysts Grant 6,455,462 - van Berge , et al. September 24, 2 | 2002-09-24 |
| Impregnation process for catalysts App 20010051589 - Van Berge, Peter Jacobus ; et al. | 2001-12-13 |
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