Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5753191 | Gas distributor plate for a gas phase polymerization apparatus | Ryoichi Yamamoto, Satoru Ohtani, Yoshiaki Kikuchi, Kenji Doi | 1998-05-19 |
| 5604994 | Drying hopper and powder drying method using the same | Yoshiaki Annen, Akira Tsuzaki, Isao Shizuma, Mitsunori Ichimura | 1997-02-25 |
| 5423133 | Drying hopper for polymer powder | Yoshiaki Annen, Akira Tsuzaki, Isao Shizuma, Mitsunori Ichimura | 1995-06-13 |