Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630179 | Oxihumic acid and its use in the treatment of various conditions | Constance Elizabeth Medlen | 2003-10-07 |
| 6569900 | Fulvic acid and its use in the treatment of various conditions | Constance Elizabeth Medlen | 2003-05-27 |
| 5302524 | Coal derived oxidation product for seedling growth stimulation | Hendrik A. Van De Venter, Izak J. Cronje | 1994-04-12 |
| 5248327 | Soil conditioning | Michael C. Laker, Izak J. Cronje | 1993-09-28 |
| 5204368 | Bacteriostatic and bacteriocidal method using fulvic acid derivatives | Izak J. Cronje, Thomas Eugene Cloete, Hendrik Swart | 1993-04-20 |
| 5178661 | Soil treatment | Hendrik V. H. van der Watt, Robin O. Barnard, Izak J. Cronje | 1993-01-12 |
| 5004831 | Recovery of humic acids | Izak J. Cronje | 1991-04-02 |
| 4999202 | Composition having bacteriocidal or bacteriostatic acitivity | Izak J. Cronje, Thomas Eugene Cloete | 1991-03-12 |
| 4985150 | Water treatment using oxidized coal | Izak J. Cronje, Thomas Eugene Cloete | 1991-01-15 |