Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8810135 | LED drive circuit, LED illumination component, LED illumination device, and LED illumination system | Yasuhiro Maruyama, Hiroyuki Shoji, Masakazu Ikeda, Hirohisa Warita, Katsumi Inaba +1 more | 2014-08-19 |
| 8421371 | LED drive circuit, LED illumination fixture, LED illumination device, and LED illumination system | Takayuki Shimizu, Hirohisa Warita, Atsushi Kanamori | 2013-04-16 |
| 8258706 | LED drive circuit, LED illumination component, LED illumination device, and LED illumination system | Yasuhiro Maruyama, Hiroyuki Shoji, Masakazu Ikeda, Hirohisa Warita, Katsumi Inaba +1 more | 2012-09-04 |
| 7764028 | LED drive circuit and LED light-emitting device | Seigo Okada | 2010-07-27 |
| 7423298 | Bidirectional photothyristor chip, optical lighting coupler, and solid state relay | Satoshi Nakajima | 2008-09-09 |
| 7157747 | Bidirectional photothyristor chip, light-fired coupler and solid state relay | Masaru Kubo | 2007-01-02 |
| 6995408 | Bidirectional photothyristor chip | Masaru Kubo | 2006-02-07 |
| 6037613 | Bidirectional thyristor device | — | 2000-03-14 |
| 5747836 | Semiconductor integrated circuit provided with thyristor | — | 1998-05-05 |
| 5293051 | Photoswitching device including a MOSFET for detecting zero voltage crossing | Nobuyuki Kato | 1994-03-08 |