Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5302524 | Coal derived oxidation product for seedling growth stimulation | Hendrik A. Van De Venter, Johannes Dekker | 1994-04-12 |
| 5248327 | Soil conditioning | Michael C. Laker, Johannes Dekker | 1993-09-28 |
| 5204368 | Bacteriostatic and bacteriocidal method using fulvic acid derivatives | Thomas Eugene Cloete, Johannes Dekker, Hendrik Swart | 1993-04-20 |
| 5178661 | Soil treatment | Hendrik V. H. van der Watt, Robin O. Barnard, Johannes Dekker | 1993-01-12 |
| 5004831 | Recovery of humic acids | Johannes Dekker | 1991-04-02 |
| 4999202 | Composition having bacteriocidal or bacteriostatic acitivity | Thomas Eugene Cloete, Johannes Dekker | 1991-03-12 |
| 4985150 | Water treatment using oxidized coal | Johannes Dekker, Thomas Eugene Cloete | 1991-01-15 |
| 4912256 | Process for the oxidation of fine coal | — | 1990-03-27 |