Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6057635 | Low-pressure mercury vapor-filled discharge lamp, luminaire and display device | Kiyoshi Nishimura, Ariyoshi Ishizaki, Masuo Shibuya, Masami Takagi, Naoki Tsutsui +2 more | 2000-05-02 |
| 4759630 | Lamp quality judgement apparatus and judgement method therefor | Haruo Sugiyama, Masao Nagai, Kunihiko Kihara, Takao Akaishi, Yasushi Tsujihara | 1988-07-26 |