Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688999 | Production of oxidized humic acids by an oxygen-alkali process | Kevin Robert Wirtz, Stephen L. Dickman | 1997-11-18 |
| 5663425 | Production of acid soluble humates | William J. Detroit, Lori L. Bushar | 1997-09-02 |