Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6151893 | Flexible tube for automobile exhaust systems | Shouji Watanabe, Hiroyuki Aihara, Tadashi Nakasuji, Katsuyuki Okada | 2000-11-28 |
| 6080371 | Catalytic converter and honeycomb metallic catalyst bed unit therefor | Hiroshi Tanabe | 2000-06-27 |
| 5967193 | Flexible pipe unit for use in exhaust pipe line of automotive engine | Tadashi Nagai, Syoji Watanabe, Seiji Katou, Toshiaki Kimura, Kazuo Yajima +5 more | 1999-10-19 |
| 5915677 | Circular plate spring | Kazuo Yajima, Tadashi Nagai, Hidetaka Higashimura, Ryo Mashimo | 1999-06-29 |
| 5909903 | Coupling structure for coupling two pipes | Yoichi Takahashi | 1999-06-08 |
| 5901988 | Structure for coupling pipe with breeches pipe | Hiroyuki Aihara | 1999-05-11 |
| 5817991 | Connecting structure for connecting holding bracket to muffler | Katsuyuki Okada, Yoichi Takahashi | 1998-10-06 |
| 4796694 | Cooling fin for heat exchanger | Shiro Ikuta, Masaru Yokoyama, Takeshi Yoshimura | 1989-01-10 |
| 4360076 | Muffler | — | 1982-11-23 |
| 4235304 | Muffler | — | 1980-11-25 |