Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4473439 | Process for pulping lignocellulosic material | Isao Wada, Wazuo Koido | 1984-09-25 |
| 4363700 | Process for pulping lignocellulosic material with an alkaline sulfide cooking liquor containing an accelerating additive and reducing assistant | Isao Wada, Kazuo Koido | 1982-12-14 |