Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975200 | Potassium fluoride removal from potassium chloride | Alvin J. Lappinga | 1990-12-04 |
| 4713231 | Process for the recovery of ammonia and fluoride values from ammonium fluoride solutions | Kent D. Campbell, Laura J. Dietsche, Lee B. Crampton, Keith Hovda, Charles A. Wilson | 1987-12-15 |