Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7419314 | Optical density changing element, optical element and photographing unit | Hideki Kaneiwa, Atsushi Matsunaga, Yoshio Ishii | 2008-09-02 |
| 7342706 | Electrochromic element, optical density changing element, optical element and photographing unit | Hideki Kaneiwa, Atsushi Matsunaga, Kiyoshi Morimoto | 2008-03-11 |
| 7236288 | Functional device, electrochromic device, optical device, and image-taking unit | Yoshio Ishii, Takuya Inoue, Takanori Hioki | 2007-06-26 |
| 7213984 | Optical density-changing element, optical element and photographic unit | Hideki Kaneiwa, Atsushi Matsunaga, Kiyoshi Morimoto | 2007-05-08 |
| 7181134 | Optical element changing optical density in response to electromagnetic wave | Hideki Kaneiwa, Atsushi Matsunaga, Kiyoshi Morimoto | 2007-02-20 |