Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6639343 | Mercury-free metal halide lamp | Kiyoshi Takahashi, Hideaki Kiryu, Masato Yoshida | 2003-10-28 |
| 6608444 | Mercury-free high-intensity discharge lamp operating apparatus and mercury-free metal halide lamp | Ryo Minamihata, Kiyoshi Takahashi, Mamoru Takeda, Hideaki Kiryu, Takayuki Murase +1 more | 2003-08-19 |
| 6586891 | High-intensity discharge lamp and high-intensity discharge lamp operating apparatus | Kiyoshi Takahashi, Ryo Minamihata, Mamoru Takeda, Hideaki Kiryu, Takayuki Murase | 2003-07-01 |
| 6573656 | High-pressure discharge lamp and method for producing the same | Kiyoshi Takahashi, Hideaki Kiryu, Masato Yoshida | 2003-06-03 |