Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6132488 | Process of treating waste containing zinc oxide | Toshikatu Hara, Yuji Okada, Kazuhiro Suzuki | 2000-10-17 |
| 6083294 | Method of treating dust exhausted from melting furnace | Toshikatsu Hara, Yuji Okada, Kazuhiro Suzuki | 2000-07-04 |
| 5871561 | Method of treating dusts containing oxides | Yuji Okada, Hirokazu Shirakawa, Masamichi Okada, Toshikatsu Hara, Kazuhiro Suzuki | 1999-02-16 |