Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670035 | Method for recovering copper | J. Murdoch MacKenzie | 1997-09-23 |
| 5660806 | Process for removing lead from sandblasting wastes containing paint chips | William E. Fristad, Dana K. Elliott | 1997-08-26 |
| 5654458 | Recovery of palladium | Michael D. Fabiano, Gary A. Kordosky, Phillip L. Mattison, Bert Gruber, Steven M. Hoagland | 1997-08-05 |
| 5607060 | Method and apparatus for removing metal contamination from soil | William E. Fristad, Jeffrey L. Narum, Phillip L. Mattison, John Fast | 1997-03-04 |