Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9321142 | Polymer material, foam obtained from same, and polishing pad using those | Chihiro Okamoto, Shinya Kato, Hirofumi Kikuchi | 2016-04-26 |
| 6979701 | Thermoplastic polyurethane foam, process for production thereof and polishing pads made of the foam | Chihiro Okamoto | 2005-12-27 |
| 4560715 | Mica flake mass and resin composition with the same incorporated therein | Ryuhei Ueeda, Kiyonobu Fujii, Akira Kubotsu, Kenji Okuno | 1985-12-24 |