Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6644172 | Sliding device | Shogo Muramatsu, Akira Takenaka | 2003-11-11 |
| 6626084 | Semi-spherical shoe | Shogo Muramatsu, Akira Takenaka | 2003-09-30 |
| 6477938 | Semi-spherical shoe | Shogo Muramatsu, Akira Takenaka | 2002-11-12 |