Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5762204 | Ferrofluid sink/float separators for separating nonmagnetic materials of different densities | Fong-Ru Yang | 1998-06-09 |
| 5470553 | Method for separating cobalt, nickel, and aluminum ions in sulfuric acid aqueous solutions and the extractant compositions used therein | Hsia Hao-Chung, Shang-Lin Tsai | 1995-11-28 |
| 5238543 | Recovery of silver from photographic film and photographic development waste solution | Tyngbin Onlin, Jeng-Shyong Jean, Pak-Hing Lee | 1993-08-24 |
| 5221325 | Process for recovering silver oxide and metals from spent silver oxide button cells | Tyngbin Onlin, Bih-Shyang Huang, Pak-Hing Lee | 1993-06-22 |