Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6358333 | Rolling member | Susumu Tanaka, Kenji Yamamura | 2002-03-19 |
| 6228184 | Rolling member | Susumu Tanaka, Kenji Yamamura | 2001-05-08 |
| 6086686 | Rolling member | Susumu Tanaka, Kenji Yamamura | 2000-07-11 |