Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9167654 | Solid light source lighting device, illumination apparatus, and illumination system | Koji Watanabe | 2015-10-20 |
| 8502463 | LED driver circuit with open load detection and associated control method | Hiromitsu Mizukawa, Kazuhiro Kumada | 2013-08-06 |
| 8487539 | Power supply for an LED illumination device | Shunsuke Shibata | 2013-07-16 |
| 8482222 | Lighting device and light fixture using lighting device | Akinori Hiramatu, Hiromitsu Mizukawa | 2013-07-09 |
| 8390213 | LED power-source circuit and illumination fixture using the same | Kazuhiro Kumada, Hiromitsu Mizukawa | 2013-03-05 |
| 8154214 | Switching power supply for an illumination device with precision current control | Shunsuke Shibata | 2012-04-10 |
| 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, Katsunobu Hamamoto, Masahiro Yamanaka | 2008-05-27 |
| 5502423 | Discharge lamp lighting device | Akio Okude, Tokushi Yamauchi, Kei Mitsuyasu, Naoki Ohnishi, Katsuyuki Kiyozumi | 1996-03-26 |
| 4595267 | Method of sending and receiving signals in photography with camera and camera flash device for that method | — | 1986-06-17 |
| 4521094 | Aperture value control device utilizing frequency signal from flash unit for camera | Satoshi Takami | 1985-06-04 |
| 4502775 | Camera flash photographing control device | — | 1985-03-05 |
| 4500190 | Camera system including flash and status indicating control circuit | — | 1985-02-19 |
| 4333719 | Multiple flash adaptor | Satoshi Takami, Teruo Hagiwara, Toru Kando | 1982-06-08 |