Cronje; Izak J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Cronje; Izak J..The latest application filed is for "soil conditioning".
- Cronje; Izak J. - Verwoerdburg ZA
- Cronje; Izak J. - Transvaal ZA
| Patent | Date |
|---|---|
| Soil conditioning Grant 5,248,327 - Laker , et al. September 28, 1 | 1993-09-28 |
| Bacteriostatic and bacteriocidal method using fulvic acid derivatives Grant 5,204,368 - Cronje , et al. April 20, 1 | 1993-04-20 |
| Soil treatment Grant 5,178,661 - van der Watt , et al. January 12, 1 | 1993-01-12 |
| Water treatment using oxidized coal Grant 4,985,150 - Cronje , et al. January 15, 1 | 1991-01-15 |
| Process for the oxidation of fine coal Grant 4,912,256 - Cronje March 27, 1 | 1990-03-27 |
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