Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5967193 | Flexible pipe unit for use in exhaust pipe line of automotive engine | Tadashi Nagai, Eizo Suyama, Syoji Watanabe, Seiji Katou, Toshiaki Kimura +5 more | 1999-10-19 |
| 5915677 | Circular plate spring | Kazuo Yajima, Tadashi Nagai, Hidetaka Higashimura, Eizo Suyama | 1999-06-29 |