Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5962607 | Method of vapor phase polymerization, vapor phase polymerizer and blower | Ryoichi Yamamoto, Toshihiro Okano, Yoshiaki Kikuchi | 1999-10-05 |
| 5604994 | Drying hopper and powder drying method using the same | Yoshiaki Annen, Akira Tsuzaki, Isao Shizuma, Takao Uetake | 1997-02-25 |
| 5423133 | Drying hopper for polymer powder | Yoshiaki Annen, Akira Tsuzaki, Isao Shizuma, Takao Uetake | 1995-06-13 |
| 4521378 | Fluid bed reactor system composed of cylindrical reaction vessel equipped with distribution plate and agitator | Ryoichi Yamamoto, Katsutoshi Horimoto | 1985-06-04 |