Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8044165 | Process for producing resin for optical material | Masaru Kawaguchi, Shigetoshi Kuma, Seiichi Kobayashi | 2011-10-25 |
| 8022163 | Internal mold release agent for production of polythiourethane optical material | Masanori Iwazumi, Nobuo Kawato, Hidetoshi Hayashi, Seiichi Kobayashi | 2011-09-20 |
| 8002239 | Valve device | — | 2011-08-23 |
| 7932327 | Polyurethane/thiourethane-based optical resin and process for producing the same | Osamu Kohgo, Junichi Mohri, Akinori Ryu, Kunio Okumura | 2011-04-26 |