Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11628338 | Iron golf club head | Kazuhiro Doi | 2023-04-18 |
| 11291885 | Swing analysis device, swing analysis method, and swing analysis system | Yasuyuki Ohta, Tetsuya Kanayama | 2022-04-05 |
| 10709943 | Iron golf club head and iron golf club | Kazuhiro Doi | 2020-07-14 |
| 10486027 | Golf ball | Norikazu Ninomiya, Yudai Washida, Kei Tsuji | 2019-11-26 |