Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6652673 | Zirconium system amorphous alloy | Akihisa Inoue, Tao Zhang, Tetsuo Yamaguchi | 2003-11-25 |
| 6645089 | Golf ball | Masaya Tsunoda, Jun Ochi, Kouhei Takemura, Masahiko Ueda | 2003-11-11 |
| 6533677 | Golf club shaft | Norio Sumitomo | 2003-03-18 |