Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9615414 | Power supply device and illumination device | Yasunori Yamamura, Tetsushi Tamura | 2017-04-04 |
| 9167642 | LED lighting device and illuminating apparatus using the same | Yuji Yoshimoto, Hiroyuki Asano, Masafumi Yamamoto | 2015-10-20 |
| 9167661 | Power supply device and lighting device and lighting fixture using the same | Masafumi Yamamoto, Hiroyuki Asano | 2015-10-20 |
| 9167665 | Lighting device, lighting apparatus using the same, and lighting system | Hisaya Takikita, Masafumi Yamamoto | 2015-10-20 |
| 9066407 | Power source unit for LED lamps, and LED lamp system | Hiroshi Terasaka, Hiroshi Kubota, Masahiko Kamata, Naoko Iwai, Takeshi Saito +2 more | 2015-06-23 |
| 8853949 | LED driver with end-of-life detection circuitry | Masafumi Yamamoto, Keisuke Ueda, Hisaya Takikita | 2014-10-07 |
| 8648544 | Illumination lighting apparatus, illumination apparatus, and illumination system | Tomohiro Sasakawa, Naoki Onishi, Masafumi Yamamoto, Keisuke Ueda, Kei Mitsuyasu | 2014-02-11 |
| 8575857 | LED lighting device | Hiroyuki Sako, Takeshi Saito, Hiroki Nakagawa, Hiroshi Terasaka | 2013-11-05 |
| 7436123 | Discharge lamp ballast device and lighting appliance | Kazuhiro Nishimoto, Masahiro Yamanaka, Toshiya Kanja | 2008-10-14 |
| 7378804 | Ballast for a discharge lamp with integrated control circuit for controlling switching element of dc power supply and inverter circuit | Kei Mitsuyasu, Katsumi Sato, Masahiro Yamanaka, Yoshifumi Kuroki | 2008-05-27 |
| 6949885 | Discharge lamp lighting device and lighting apparatus | Katsumi Sato, Toshiya Kanja | 2005-09-27 |
| 6696798 | Ballast circuit for operating a discharge lamp | Kazuhiro Nishimoto, Hiromitsu Mizukawa | 2004-02-24 |