Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6159885 | Alumina-based sintered material | Ken Mizuno, Yoshihiro Yamamoto, Kazuhisa Itakura | 2000-12-12 |
| 6069105 | Alumina-based sintered materials and process for producing the same | Yoshihiro Yamamoto, Katsura Matsubara, Iazuhisa Itakura, Ken Mizuno | 2000-05-30 |
| 4499192 | Silicon nitride sintered products having high corrosion resistance and process for production thereof | Yoshinori Hattori, Yasushi Matsuo | 1985-02-12 |
| 4440707 | Process for producing silicon nitride sintered products having high toughness | Yoshinori Hattori, Yasushi Matsuo | 1984-04-03 |