Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230876 | Removal of vanadium from phosphoric acid | Klaas Jan Hutter, David K. Johnson, Gene Kawakami | 1993-07-27 |
| 4447403 | Method for autoclave oxidation of ion species aqueous solutions | Laurence W. Bierman, David Bortner | 1984-05-08 |
| 4367197 | Method for the control of excessive corrosion in phosphoric acid circuits | Roger B. Humberger | 1983-01-04 |
| 4277454 | Methods for the control of excessive corrosion in phosphoric acid circuits | Roger B. Humberger | 1981-07-07 |