Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387079 | Method of manufacturing high-purity silicon nitride powder | Kohji Tsukuma, Takaaki Tsukidate | 1983-06-07 |
| 4346068 | Process for preparing high-purity .alpha.-type silicon nitride | Yoshitaka Kubota, Takaaki Tsukidate | 1982-08-24 |
| 4332932 | Method for producing a rubber melt in a temperature-controlled screw extruder | Kunihiro Harada, Yoshiki Maki, Norimasa Oda | 1982-06-01 |