Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D699801 | Golf club shaft | Akinari Ito, Toshio Ninomiya | 2014-02-18 |
| 8206238 | Shaft for golf club | Takashi Kaneko, Tetsuya Atsumi, Tsutomu Ibuki | 2012-06-26 |
| D602107 | Golf club shaft | Tetsuya Atsumi, Takashi Kaneko, Tsutomu Ibuki | 2009-10-13 |
| D596254 | Golf club shaft | Tetsuya Atsumi, Takashi Kaneko, Tsutomu Ibuki | 2009-07-14 |