Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8776382 | Cutting instrument | Hiroyuki Ochiai, Mitsutoshi Watanabe, Takashi Furukawa, Hiroki Yoshizawa, Yukihiro Shimoda | 2014-07-15 |
| 5117918 | Cultivator blade supporting structure | Tohru Yamada, Tomiji Oguri, Taizo Yamamoto | 1992-06-02 |
| 4697644 | Cultivator nail supporting structure | Tohru Yamada, Shungo Matsumoto, Taizo Yamamoto | 1987-10-06 |