Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649070 | Method for utilizing sulfuric acid/peroxide liquid mixture | — | 2003-11-18 |
| 6573336 | Wastewater treating agent, method for wastewater treatment, sludge dehydrant and method for sludge treatment | Haruo Watanabe, Shigeo Kiuchi, Takaaki Kano | 2003-06-03 |
| 6545070 | Composition of ionic substituted polystyrene and stabilizer(s) | Tsutomu Noguchi, Haruo Watanabe, Miyuki Kuromiya | 2003-04-08 |