Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6610152 | Method for removing inorganic matter from solid surfaces | Vassily A. Babain, Andrey A. Murzin, Igor V. Smirnov, Vadim A. Starchenko, Andrey Shadrin | 2003-08-26 |
| 6187911 | Method for separating metal chelates from other materials based on solubilities in supercritical fluids | Chien M. Wai, Cindy Phelps | 2001-02-13 |
| 6169221 | Decontamination of metal | Timothy Nicholas Milner, Alexander Hamilton Smith | 2001-01-02 |
| 6132491 | Method and apparatus for dissociating metals from metal compounds extracted into supercritical fluids | Chien M. Wai, Fred H. Hunt, Yuehe Lin | 2000-10-17 |
| 5840193 | Fluid extraction using carbon dioxide and organophosphorus chelating agents | Chien M. Wai, Yuehe Lin, Yak Hwa Kwang | 1998-11-24 |
| 5834316 | Solvent extraction | Robert George Godfrey Holmes, Nigel Dennis Tinker, Michael Darbyshire | 1998-11-10 |
| 5792357 | Method and apparatus for back-extracting metal chelates | Chien M. Wai, Yuehe Lin | 1998-08-11 |
| 5770085 | Extraction of metals and/or metalloids from acidic media using supercritical fluids and salts | Chien M. Wai, Yuehe Lin | 1998-06-23 |
| 5750081 | Solvent extraction of metal containing species | — | 1998-05-12 |
| 5653884 | Separating solutes from solutions | Mark D. Burford, Anthony Clifford, Keith D. Bartle, Catherine M. Cowey | 1997-08-05 |
| 5606724 | Extracting metals directly from metal oxides | Chien M. Wai, Cindy Phelps | 1997-02-25 |