Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11406879 | Golf club | Tsuyoshi Kitazaki, Masayoshi Kogawa, Norihiko Nakahara | 2022-08-09 |
| 7500925 | Golf club and method of designing hollow golf club head | Tomoaki Mori, Masahiko Miyamoto | 2009-03-10 |
| 7402113 | Golf club head and golf club | Tomoaki Mori, Norihiko Nakahara, Hiroshi Saegusa | 2008-07-22 |
| 7217199 | Hollow golf club head | Norihiko Nakahara, Shinji Yamamoto, Tomoaki Mori | 2007-05-15 |
| 7169056 | Golf club set and golf club shaft set | Takayuki Shiraishi, Masayoshi Kogawa, Masaki Akie | 2007-01-30 |
| 7156749 | Golf club set and golf club shaft set | Takayuki Shiraishi, Masayoshi Kogawa, Masaki Akie | 2007-01-02 |
| 7150684 | Golf club set and golf club shaft set | Takayuki Shiraishi, Masayoshi Kogawa, Masaki Akie | 2006-12-19 |
| 7037214 | Hollow golf club head | Norihiko Nakahara, Shinji Yamamoto, Tomoaki Mori | 2006-05-02 |
| 6929565 | Golf club head | Norihiko Nakahara, Tomoaki Mori, Shinji Yamamoto | 2005-08-16 |
| 6916251 | Golf club set and golf club shaft set | Takayuki Shiraishi, Masayoshi Kogawa, Masaki Akie | 2005-07-12 |
| 6572489 | Golf club head | Masahiko Miyamoto, Masaki Akie | 2003-06-03 |
| 6546802 | Evaluation method of golf club and golf club | Takayuki Shiraishi, Masayoshi Kogawa, Masaki Akie | 2003-04-15 |
| 6514153 | Golf club head | Masahiko Miyamoto | 2003-02-04 |
| 6071198 | Iron golf club set | Masahiko Miyamoto | 2000-06-06 |
| 6012990 | Golf club head | — | 2000-01-11 |