Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10886434 | White LED lamp, backlight, light emitting device, display device and illumination device | Tsutomu Ishii, Hajime Takeuchi, Katsutoshi Nakagawa, Yumi Kanno, Masaki Toyoshima +2 more | 2021-01-05 |
| 10473274 | White light source system | Masahiko Yamakawa, Ryoji Tsuda, Tatsunori Itoga, Yasuhiro Shirakawa, Junji Taniguchi | 2019-11-12 |
| 10107457 | Lighting apparatus | Hiroshi Ohno, Mitsuaki Kato, Hiromichi Hayashihara, Hiroyasu Kondo, Ryoji Tsuda | 2018-10-23 |
| 9660149 | Phosphor and LED light emitting device using the same | Tsutomu Ishii, Yoshitaka Funayama, Yumi Ito, Ryo Sakai, Katsutoshi Nakagawa +2 more | 2017-05-23 |
| 9228718 | LED light bulb | Masahiko Yamakawa, Yasuhiro Shirakawa, Katsutoshi Nakagawa | 2016-01-05 |
| 9169436 | Phosphor and LED light emitting device using the same | Tsutomu Ishii, Yoshitaka Funayama, Yumi Ito, Ryo Sakai, Katsutoshi Nakagawa +2 more | 2015-10-27 |
| 9115855 | White light source | Tatsunori Itoga, Masahiko Yamakawa | 2015-08-25 |
| 9039218 | White LED lamp, backlight, light emitting device, display device and illumination device | Tsutomu Ishii, Hajime Takeuchi, Katsutoshi Nakagawa, Yumi Ito, Masaki Toyoshima +2 more | 2015-05-26 |
| 8955996 | LED light bulb | Masahiko Yamakawa, Yasuhiro Shirakawa, Katsutoshi Nakagawa | 2015-02-17 |
| 8933475 | Light emitting device | Katsutoshi Nakagawa, Yoshitaka Funayama, Daichi USUI | 2015-01-13 |
| 8896004 | White LED, backlight using the same, and liquid crystal display device | Ryo Sakai, Yasuhiro Shirakawa, Hajime Takeuchi, Tsutomu Ishii | 2014-11-25 |
| 8872421 | White LED, backlight using the same, and liquid crystal display device | Hajime Takeuchi, Ryo Sakai, Tsutomu Ishii, Yasuhiro Shirakawa | 2014-10-28 |
| 8796915 | LED light bulb | Masahiko Yamakawa, Yasuhiro Shirakawa, Katsutoshi Nakagawa | 2014-08-05 |
| 8632202 | White LED, backlight using same, and liquid crystal display device conforming to EBU standard | Hajime Takeuchi, Ryo Sakai, Tsutomu Ishii, Yasuhiro Shirakawa | 2014-01-21 |
| 8598618 | White light emitting device, backlight, liquid crystal display device, and illuminating device | Tsutomu Ishii, Hajime Takeuchi, Ryo Sakai, Yasuhiro Shirakawa | 2013-12-03 |
| 8541798 | Semiconductor light emitting device, and backlight and display device comprising the semiconductor light emitting device | Ryo Sakai, Hajime Takeuchi, Tsutomu Ishii, Yasuhiro Shirakawa | 2013-09-24 |
| 8487330 | Phosphor and LED light-emitting device using the same | Tsutomu Ishii, Yoshitaka Funayama, Yumi Ito, Ryo Sakai, Katsutoshi Nakagawa +2 more | 2013-07-16 |
| 8471283 | White LED lamp, backlight, light emitting device, display device and illumination device | Tsutomu Ishii, Hajime Takeuchi, Katsutoshi Nakagawa, Yumi Ito, Masaki Toyoshima +2 more | 2013-06-25 |
| 8461756 | Linear white light source, and backlight and liquid crystal display device using the same | Ryo Sakai, Yasuhiro Shirakawa, Hajime Takeuchi, Tsutomu Ishii | 2013-06-11 |
| 8409754 | Positive electrode active material for secondary cell and nonaqueous electrolyte secondary cell using the same, and method for analysis of positive electrode active material for secondary cell | Ryo Sakai, Yasuhiro Shirakawa, Hajime Takeuchi, Koshin Tanaka, Kazuki Amemiya +1 more | 2013-04-02 |
| 8395725 | Light emitting module, backlight using the same, and liquid crystal display device | Hajime Takeuchi, Ryo Sakai, Tsutomu Ishii, Yasuhiro Shirakawa | 2013-03-12 |
| 8344407 | White light source, backlight, liquid crystal display apparatus, and illuminating apparatus | Tetsuo Inoue, Hajime Takeuchi, Toshio Shimaoogi, Yasuhiro Shirakawa | 2013-01-01 |
| 8288937 | White LED, and backlight and liquid crystal display device using the same | Tsutomu Ishii, Ryo Sakai, Katsutoshi Nakagawa, Hajime Takeuchi, Yumi Ito +1 more | 2012-10-16 |
| 8174180 | Light-emitting device having scattering reflector with preset square average inclination | Tetsuo Inoue, Hajime Takeuchi, Toshio Shimaoogi, Yasuhiro Shirakawa | 2012-05-08 |
| 7961762 | White light-emitting lamp and illuminating device using the same | Tsutomu Ishii, Yasuhiro Shirakawa, Ryo Sakai, Hajime Takeuchi | 2011-06-14 |