Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8932164 | Wear-resistant chain | Yoshio Okumura, Yukihiro Kishi | 2015-01-13 |
| 8888632 | Double-sided driving silent chain and double-sided driving silent chain transmission using the same | Yukihiro Kishi, Nobuyuki Matsui | 2014-11-18 |