Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7423380 | Metal halide lamp that has desired color characteristic and is prevented from non-lighting due to leakage of arc tube attributable to crack occurring at thin tube, and lighting apparatus adopting the metal halide lamp | Isao Ota, Kazuo Takeda | 2008-09-09 |
| 7230389 | Metal halide lamp having function for suppressing abnormal discharge | Kazuo Takeda, Isao Ota, Yoshiharu Nishiura | 2007-06-12 |