Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700893 | Water-soluble cationic copolymers and their use as flocculants and drainage aids | Lawrence L. Kuo, Roger Yiming Leung | 1997-12-23 |
| 5681912 | Water-soluble cationic copolymers and their use as flocculants and drainage retention aids | Lawrence L. Kuo, Roger Yiming Leung | 1997-10-28 |