Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7261844 | Photochromic contact lens having excellent discoloring characteristic | Sadayasu Tanikawa, Naotaka Kamiya | 2007-08-28 |
| 6659607 | Contact lens | Kazuya Miyamura, Keiji Sugimoto, Tadashi Sawano, Asaki Suzaki, Hideaki Kondo | 2003-12-09 |