Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943541 | Glass ceramics | Akira Watanabe, Seiji Kihara, Makoto Mitsudo | 1990-07-24 |
| 4732749 | Method of manufacturing longer fibers of potassium titanate | Akira Watanabe, Gouji Saeki, Megumu Shimomi | 1988-03-22 |
| 4681633 | High strength calcium phosphate glass-ceramic materials | Akira Watanabe, Seiji Kihara, Makoto Mitsudoh, Yoh'ichi Wakabayashi | 1987-07-21 |
| 4626514 | Good aesthetic artificial dental materials by calcium phosphate glass-ceramic | Akira Watanabe, Hiroyasu Tokuda, Seiji Kihara, Yasuhiro Makino, Keiji Kamegawa | 1986-12-02 |
| 4540674 | Silicon nitride composite refractories | Akira Watanabe, Noboru Shinoda, Tetsusaburo Isono, Kenji Fujiwara | 1985-09-10 |