Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810536 | Swimming goggles | Tamenobu Yamamoto, Yoshihisa Ishiba | 2004-11-02 |
| D451531 | Swimming goggles | — | 2001-12-04 |
| 5922246 | Eyeglass lens and molded material of synthetic resin having transmittance minimum no greater than 25% at 550-585 nm | Shoshiro Matsushita, Ikuo Shimizu, Yoshihisa Ishiba, Oritoshi Murata | 1999-07-13 |