Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9683687 | Spherical exhaust pipe joint | Hidetoshi Kaida, Tsuyoshi Suematsu | 2017-06-20 |
| 9434253 | Damper and operation unit | Katsutoshi Kumazawa, Kentaro Yamauchi, Daisuke Yoshimoto | 2016-09-06 |
| 4559249 | Sliding member and a method for manufacturing the same | Yoshihiro Katsui, Kikuo Sumiyoshi, Eiji Sato, Kingo Miyasaka | 1985-12-17 |