Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5531975 | Process for the production of phosphoric acid and calcium fluoride | William R. Erickson | 1996-07-02 |
| 5427757 | Process for the production of phosphoric acid and hydrogen fluoride from phosphate rock and fluosilicic acid | William R. Erickson | 1995-06-27 |
| 5180569 | Process for the production of phosphoric acid and hydrogen fluoride from phosphate rock and fluosilicic acid | William R. Erickson | 1993-01-19 |