Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7505655 | White light-emitting device using fluorescent fiber | Osamu Ishii, Naruhito Sawanobori, Shinobu Nagahama | 2009-03-17 |
| 7277618 | White light-emitting device using fluorescent fiber | Osamu Ishii, Naruhito Sawanobori, Shinobu Nagahama | 2007-10-02 |
| 6372155 | Oxide glass showing long afterglow and accelerated phosphorescence | Yoshinori Yamamoto, Naruhito Sawanobori, Shinobu Nagahama | 2002-04-16 |
| 6271160 | Oxide phosphorescent glass capable of exhibiting a long lasting afterglow and photostimulated luminescence | Yoshinori Yamamoto, Naruhito Sawanobori, Shinobu Nagahama | 2001-08-07 |
| 6123872 | Oxide phosphorescent glass capable of exhibiting a long lasting after-glow and photostimulated luminescence | Yoshinori Yamamoto, Naruhito Sawanobori, Shinobu Nagahama | 2000-09-26 |
| 5961883 | Oxide fluorescent glass capable of exhibiting visible fluorescence | Masaaki Otsuka, Hideaki Takaku, Naruhito Sawanobori | 1999-10-05 |
| 5755998 | Fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region | Masaaki Otsuka, Shinobu Nagahama, Naruhito Sawanobori | 1998-05-26 |