Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4610723 | Process for leaching sulphide concentrates of the tetrahedrite type containing high concentrations of arsenic and antimony | Eduardo D. Nogueira | 1986-09-09 |
| 4235713 | Process for the elimination of accumulated iron in organic phases of fluid-fluid extraction that contain di-2-ethyl-hexyl phosphoric acid | Eduardo Diaz Nogueira, Jose M. Regife Vega | 1980-11-25 |