Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6274983 | High pressure mercury lamp with particular electrode structure and emission device for a high-pressure mercury lamp | Masachika Ooyama, Kazuhiro Goto | 2001-08-14 |
| 6002197 | Metal halide lamp light source device having conducting wire positioned to prevent it from casting a shadow | Yasuo Tanaka, Kiyoyuki Kabuki, Tadatoshi Higashi | 1999-12-14 |
| 5723944 | Metal halide lamp of the short arc type | Tadatoshi Higashi | 1998-03-03 |
| 5592050 | Metal halide lamp | Tadatoshi Higashi | 1997-01-07 |