Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6905422 | Shaft for light-weight golf clubs | Tetsuya Atsumi, Ikuo Takiguchi, Tsutomu Ibuki | 2005-06-14 |
| 6767422 | Shaft for light-weight golf clubs | Tetsuya Atsumi, Ikuo Takiguchi, Tsutomu Ibuki | 2004-07-27 |
| 4654264 | Method of sizing carbon fiber and a carbon fiber composition | Hajime Asai | 1987-03-31 |