Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5380004 | Iron-type golf club set | Takaharu Okumoto, Hideyo Asabuki | 1995-01-10 |
| 5333859 | Constant swing golf club set by varied club length | Takaharu Okumoto, Teruo Goto, Shinkichi Saito, Hideyo Asabuki | 1994-08-02 |
| 5333862 | Wood type golf club | Shinkichi Saito, Hideyo Asabuki | 1994-08-02 |
| 5121918 | Constant swing golf club set by varied club length | Takaharu Okumoto, Teruo Goto, Shinkichi Saito, Hideyo Asabuki | 1992-06-16 |
| 4986541 | Iron golf club set | Shinkichi Saito, Takaharu Okumoto, Hideyo Asabuki | 1991-01-22 |
| 4645207 | Set of golf club irons | Shinkichi Saito, Takamitsu Takebayashi | 1987-02-24 |