Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5159490 | Mirror | Takashi Amano, Tetsuo Oka, Masami Ishii | 1992-10-27 |
| 4979958 | Artificial stem for femur of coxa | Shigeo Niwa, Kazuhiko Sawai, Tomokazu Hattori, Yasumasa Matsuda, Wataru Yagi +2 more | 1990-12-25 |
| 4553015 | Method of fabricating piston by welding | Masami Ishii, Fuminao Arai, Noriaki Hattori | 1985-11-12 |