Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6294861 | Electric discharge lamp apparatus | Masato Harazaki, Yasuyoshi Numajiri, Takeshi Fukuyo, Yoshitaka Ohshima, Shinichi Irisawa | 2001-09-25 |
| 6274973 | Electric discharge lamp apparatus with insulating plug | Masato Harazaki, Yasuyoshi Numajiri, Takeshi Fukuyo, Yoshitaka Ohshima, Shinichi Irisawa | 2001-08-14 |
| 6239539 | Electric discharge lamp apparatus and insulating plug therefor having a particular front portion | Masato Harazaki, Yasuyoshi Numajiri, Takeshi Fukuyo, Yoshitaka Ohshima, Shinichi Irisawa | 2001-05-29 |
| 5402037 | Arc tube having particular volume and gas pressure for luminous flux | Shinichi Irisawa, Yasuyoshi Numajiri | 1995-03-28 |