Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11406879 | Golf club | Tsuyoshi Kitazaki, Masayoshi Kogawa, Yoh Nishizawa | 2022-08-09 |
| 7470201 | Hollow golf club head | Shinji Yamamoto | 2008-12-30 |
| 7402113 | Golf club head and golf club | Tomoaki Mori, Hiroshi Saegusa, Yoh Nishizawa | 2008-07-22 |
| 7232380 | Golf club head | — | 2007-06-19 |
| 7217199 | Hollow golf club head | Shinji Yamamoto, Yoh Nishizawa, Tomoaki Mori | 2007-05-15 |
| 7204768 | Hollow golf club head | Tomoaki Mori, Masahiko Miyamoto | 2007-04-17 |
| 7169064 | Hollow golf club head | Masahiko Miyamoto, Shinji Yamamoto | 2007-01-30 |
| 7147577 | Hollow golf club head | Masahiko Miyamoto, Shinji Yamamoto | 2006-12-12 |
| 7108612 | Hollow golf club head | Tomoaki Mori, Masahiko Miyamoto | 2006-09-19 |
| 7063629 | Hollow golf club head | Masahiko Miyamoto, Shinji Yamamoto | 2006-06-20 |
| 7037214 | Hollow golf club head | Shinji Yamamoto, Yoh Nishizawa, Tomoaki Mori | 2006-05-02 |
| 6945876 | Hollow golf club head | Tomoaki Mori, Masahiko Miyamoto | 2005-09-20 |
| 6929565 | Golf club head | Yoh Nishizawa, Tomoaki Mori, Shinji Yamamoto | 2005-08-16 |
| 6565450 | Golf club set | — | 2003-05-20 |
| 6341723 | Method of producing golf club heads | Shinji Yamamoto | 2002-01-29 |
| 5967905 | Golf club head and method for producing the same | Shinji Yamamoto, Shigeki Ono, Toru Yoshida | 1999-10-19 |
| 5807191 | Iron golf club head | — | 1998-09-15 |