Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4258016 | Process for recovering Ni (II), Cu (II) and Co (II) from an ammoniacal-ammonium sulfate leach liquor | Richard E. Siemens, David N. Nilsen | 1981-03-24 |
| 4231866 | Recovery of organic and aqueous phases from solvent extraction emulsions | Kenneth Wayne Moser, Richard E. Siemens | 1980-11-04 |