Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7419314 | Optical density changing element, optical element and photographing unit | Ryuji Shinohara, Atsushi Matsunaga, Yoshio Ishii | 2008-09-02 |
| 7342706 | Electrochromic element, optical density changing element, optical element and photographing unit | Ryuji Shinohara, Atsushi Matsunaga, Kiyoshi Morimoto | 2008-03-11 |
| 7213984 | Optical density-changing element, optical element and photographic unit | Ryuji Shinohara, Atsushi Matsunaga, Kiyoshi Morimoto | 2007-05-08 |
| 7181134 | Optical element changing optical density in response to electromagnetic wave | Ryuji Shinohara, Atsushi Matsunaga, Kiyoshi Morimoto | 2007-02-20 |