Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9468975 | Treatment of chemical feedstocks | Johannes Theodorus Nel, Willem Liebenberg Retief, Johan Louis Havenga, Johannes Petrus Le Roux | 2016-10-18 |
| 9416431 | Treatment of minerals | Willem Liebenberg Retief, Johannes Theodorus Nel, Philippus Lodewyk Crouse, Johannes Petrus Le Roux | 2016-08-16 |
| 8778291 | Treatment of zirconia-based material with ammonium bi-fluoride | Willem Liebenberg Retief, Johannes Theodorus Nel, Philippus Lodewyk Crouse | 2014-07-15 |