Issued Patents 2011
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D650878 | Iron-type golf club head | Kazuhiro Doi, Tsugunobu Sakamoto | 2011-12-20 |
| D650877 | Iron-type golf club head | Isamu Toshinari, Arata Kamo | 2011-12-20 |
| D650876 | Hybrid-type golf club head | Kazuya Ishida, Tetsu Kanayama, Arata Kamo | 2011-12-20 |
| 8021246 | Iron golf club heads and golf club sets with variable weight distribution | Tetsuya Kanayama, Isamu Toshinari, Kazuhiro Doi, Tomoaki Aoki | 2011-09-20 |
| 8016694 | Golf club head and golf clubs | Tetsuya Kanayama, Masao Nagai | 2011-09-13 |
| D645103 | Iron-type golf club | Kazuhiro Doi, Tsugunobu Sakamoto | 2011-09-13 |
| D641821 | Iron-type golf club head | Isamu Toshinari, Arata Kamo | 2011-07-19 |
| D641817 | Wood-type golf club head | Kazuya Ishida, Tetsu Kanayama, Kamo Arata | 2011-07-19 |
| D641444 | Iron-type golf club head | Kazuhiro Doi, Tsugunobu Sakamoto | 2011-07-12 |
| 7972222 | Iron golf club heads and golf club sets with variable weight distribution | Tetsuya Kanayama, Kazuhiro Doi | 2011-07-05 |
| D639363 | Wood-type golf club | Tetsuya Kanayama, Arata Kamo | 2011-06-07 |