Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8710724 | LED light source lamp having drive circuit arranged in outer periphery of LED light source | Hiroki Nakagawa, Yoshinori Kakuno, Kazushige Sugita | 2014-04-29 |
| 8604679 | LED light source lamp having drive circuit arranged in outer periphery of led light source | Hiroki Nakagawa, Yoshinori Kakuno, Kazushige Sugita | 2013-12-10 |
| 7223145 | Fluorescent lamp having meandering discharge path and manufacturing method of the same | Yusuke Okazaki, Nobutaka Ota, Akio Kitada, Tadashi Shimizu | 2007-05-29 |
| 7009334 | Fluorescent lamp having meandering discharge path and manufacturing method of the same | Yusuke Okazaki, Nobutaka Ota, Akio Kitada, Tadashi Shimizu | 2006-03-07 |
| 5828169 | Discharge lamp having an amalgam within a barrier means | Minoru Myojo | 1998-10-27 |
| 5646483 | Discharge lamp having cesium compound | Minoru Myojo, Haruo Yamazaki | 1997-07-08 |