Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10933441 | Method for manufacturing tow prepreg | Akiyoshi Utsumi | 2021-03-02 |
| 10730246 | Fiber-reinforced member and method for manufacturing same | Katsuyuki Aizawa | 2020-08-04 |
| 10399114 | Apparatus and method for manufacturing tow prepreg | Akiyoshi Utsumi | 2019-09-03 |
| D547817 | Perimeter-weighted golf club back with integrated trapezoidal weight | Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen | 2007-07-31 |
| 7131913 | Iron golf club and golf club set | Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen | 2006-11-07 |
| D508722 | Golf club iron head | Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen | 2005-08-23 |
| 6899638 | Golf club | Kenji Onoda, Koji Sakai, Yukihiro Teranishi, Takeshi Naruo, Kazuhiro Ohmori +1 more | 2005-05-31 |
| D504167 | Weight portion for a golf club iron head | Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen | 2005-04-19 |
| 6709345 | Iron golf club and golf club set | Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie | 2004-03-23 |
| 6695712 | Golf club head, iron golf club head, wood golf club head, and golf club set | Hiroshi Nagao, Kanta Shimotaka, Kei Tsuji, Koji Sakai, Takashi Kimura | 2004-02-24 |
| 6666779 | Golf club and method of manufacturing the golf club | Kiyotaka Chaen, Isamu Toshinari, Kenji Kanegawa | 2003-12-23 |
| 6431355 | Core material for caddie bag and caddie bag using the core material | Koryo Miura, Satoshi Yoshida | 2002-08-13 |
| 6402639 | Metal wood club head | Naoyuki Masuda, Kiyoshi Sugimoto, Koji Sakai | 2002-06-11 |