Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6986878 | Method of producing potassium sulfate via cation exchange | — | 2006-01-17 |
| 5460765 | Process for pan granulating a particulate material | Siu Ma | 1995-10-24 |
| 5143599 | Process for refining kaolin | Robin Phinney | 1992-09-01 |
| 5093088 | Apparatus for producing phosphoric acid from phosphate ore | William R. Erickson, Robin Phinney, James D. Wilson | 1992-03-03 |
| 4828811 | Method for producing phosphoric acid from phosphate ore | William R. Erickson, Robin Phinney, James D. Wilson | 1989-05-09 |
| 4735683 | Process for preparation of potassium salts from pulp of lignocellulosic materials | Alfred Y. Wong | 1988-04-05 |