Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11406879 | Golf club | Tsuyoshi Kitazaki, Yoh Nishizawa, Norihiko Nakahara | 2022-08-09 |
| 7651403 | Method of selecting golf club | Masaki Yamamoto, Hiroshi Saegusa, Masahiko Miyamoto | 2010-01-26 |
| 7169056 | Golf club set and golf club shaft set | Takayuki Shiraishi, Yoh Nishizawa, Masaki Akie | 2007-01-30 |
| 7156749 | Golf club set and golf club shaft set | Takayuki Shiraishi, Yoh Nishizawa, Masaki Akie | 2007-01-02 |
| 7150684 | Golf club set and golf club shaft set | Takayuki Shiraishi, Yoh Nishizawa, Masaki Akie | 2006-12-19 |
| 6916251 | Golf club set and golf club shaft set | Takayuki Shiraishi, Yoh Nishizawa, Masaki Akie | 2005-07-12 |
| 6546802 | Evaluation method of golf club and golf club | Takayuki Shiraishi, Yoh Nishizawa, Masaki Akie | 2003-04-15 |