Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8847477 | Light-emitting circuit and luminaire | Seiko Kawashima, Yoshiko Takahashi, Masahiro Fujita | 2014-09-30 |
| 7573203 | Mercury-free high-pressure discharge lamp and luminaire using the same | Masazumi Ishida, Mikio Matsuda, Kozo Uemura | 2009-08-11 |
| 6781292 | High pressure discharge lamp and luminaire | Masazumi Ishida, Sadao Sakaguchi, Shigemi Oku | 2004-08-24 |
| 6661176 | High pressure discharge lamp, high pressure discharge lamp lighting apparatus and luminaire therefor | Hisashi Honda, Sadao Sakuguchi, Masazumi Ishida, Seiji Ashida, Shigemi Oku | 2003-12-09 |
| 6628082 | Glow starter for a high pressure discharge lamp | Naoya Matsumoto, Hiroyuki Ogata, Satoshi Iwasawa, Akira Ito, Daisuke Takayama +2 more | 2003-09-30 |