Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7935171 | Production of metallic nickel with low iron content | Ivan Ratchev, Houyuan Liu, Harald Theowald Muller | 2011-05-03 |
| 7871584 | Consecutive or simultaneous leaching of nickel and cobalt containing ores | Houyuan Liu, Wolf Meihack | 2011-01-18 |