Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7057349 | Lightening device for metal halide discharge lamp | Toshihiko Ishigami, Mikio Matsuda, Toshio Hiruta | 2006-06-06 |
| 6873109 | Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal halide discharge lamp | Toshihiko Ishigami, Mikio Matsuda, Toshio Hiruta | 2005-03-29 |
| 6528946 | Compact-type metal halide discharge lamp | Toshihiko Ishigami, Mikio Matsuda, Toshio Hiruta | 2003-03-04 |
| 6448712 | High-pressure discharge lamp | Hisashi Honda, Seiji Ashida, Ariyoshi Ishizaki, Akira Itoh, Shigehisa Kawatsuru +1 more | 2002-09-10 |
| 6353289 | Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal halide discharge lamp | Toshihiko Ishigami, Mikio Matsuda, Toshio Hiruta | 2002-03-05 |
| 6249086 | High-pressure discharge lamp including a limited amount of carbon remaining on an electrode surface | Hisashi Honda, Seiji Ashida, Ariyoshi Ishizaki, Akira Itoh, Shigehisa Kawatsuru +1 more | 2001-06-19 |
| 6215254 | High-voltage discharge lamp, high-voltage discharge lamp device, and lighting device | Hisahi Honda, Seiji Ashida, Tatsuo Otabe, Masuo Shibuya, Noriji Watanabe | 2001-04-10 |
| 4734612 | High pressure metal vapor discharge lamp | Hiroki Sasaki, Akihiro Inoue, Hiroyoshi Takanishi, Nobuyoshi Kuno | 1988-03-29 |