Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6599210 | Sprocket | Jichu Oh | 2003-07-29 |
| 6367300 | Sprocket with thin body and grooved teeth | — | 2002-04-09 |
| 6203462 | Sprocket | — | 2001-03-20 |
| D435001 | Sprocket | Wan Zhi Zhong | 2000-12-12 |
| D434351 | Sprocket | Wan Zhi Zhong | 2000-11-28 |
| 6142900 | Sprocket with thin body and grooved teeth | — | 2000-11-07 |
| D430511 | Sprocket | Wan Zhi Zhong | 2000-09-05 |
| 5980407 | Sprocket and brake disc having a function to prevent a warpage | Fumihiko Metsugi, Akihito Ohata | 1999-11-09 |
| 5830095 | Sprocket and manufacturing method thereof | Fumihiko Metsugi, Akihito Ohata, Akihito Yoshiie, Shunji Takeda | 1998-11-03 |