Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888147 | Process for production of cellulose acetate molding materials | Hiroaki Sawada | 1989-12-19 |
| 4357188 | Method for manufacturing cigarette filters | Kazuhiko Morifuji, Takashi Sakai | 1982-11-02 |
| 4206080 | Method of producing of treating material for oil-containing waste water | Hiroshi Sato, Munetsugu Nakatani | 1980-06-03 |