Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9643905 | Phenylnaphthol derivatives | Shinobu Izumi | 2017-05-09 |
| 9487693 | Chromene compound | Shinobu Izumi, Yusuke Daikoku, Mitsuyoshi Sando | 2016-11-08 |
| 9316765 | Photochromic composition | Katsuhiro Mori, Toshimitsu Hiraren, Yasutomo Shimizu | 2016-04-19 |
| 8778236 | Chromene compound | Junji Takenaka, Junji Momoda, Toshiaki Takahashi, Mitsuyoshi Sando, Shinobu Izumi | 2014-07-15 |
| 8709308 | Chromene compound | Toshiaki Takahashi, Junji Takenaka, Junji Momoda, Mitsuyoshi Sando, Shinobu Izumi | 2014-04-29 |
| 8691120 | Chromene compound | Toshiaki Takahashi, Junji Takenaka, Junji Momoda, Mitsuyoshi Sando | 2014-04-08 |
| 8308996 | Chromene compound | Toshiaki Takahashi, Junji Takenaka, Junji Momoda | 2012-11-13 |