Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312492 | Beneficiation of animal manure | — | 2001-11-06 |
| 6053958 | Process for preparation of fertilizer containing slag | — | 2000-04-25 |
| 5964940 | Process for increasing the water solubility of gypsum | — | 1999-10-12 |
| 5584905 | Preparation of amendments and fertilizer products for agricultural soils by entrapment of acid gases by solid waste material | — | 1996-12-17 |
| 5486068 | Process for treating waste materials with concentrated acid and the product produced thereby | — | 1996-01-23 |
| 5129936 | Processes for the preparation of acid fortified paramagnetic iron sulfate salt compounds for use in the treatment of agricultural soils | — | 1992-07-14 |
| 4542654 | Bourdon tube construction | Richard H. Wetterhorn | 1985-09-24 |