Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700525 | Passivation method and composition for galvanized metal surfaces | Jiangbo Ouyang | 1997-12-23 |
| 5641537 | Composition for and method of monitoring dried-in-place non-chrome polyacrylamide based treatments for metals | Jiangbo Ouyang | 1997-06-24 |