Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D552703 | Perimeter-weighted back portion with an integrated trapezoidal weight portion for an iron golf club | Motokaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie | 2007-10-09 |
| D547817 | Perimeter-weighted golf club back with integrated trapezoidal weight | Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie | 2007-07-31 |
| 7131913 | Iron golf club and golf club set | Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie | 2006-11-07 |
| D508722 | Golf club iron head | Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie | 2005-08-23 |
| D504167 | Weight portion for a golf club iron head | Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie | 2005-04-19 |
| 6666779 | Golf club and method of manufacturing the golf club | Mototaka Iwata, Isamu Toshinari, Kenji Kanegawa | 2003-12-23 |
| 6520867 | Golf club shaft | Koryo Miura | 2003-02-18 |
| D379390 | Golf club head | Tomomi Watanabe, Harry B. Taylor | 1997-05-20 |