Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8115389 | High pressure discharge lamp | Satoru Umezaki, Yoichi Mukaino | 2012-02-14 |
| 8072145 | Extra high pressure mercury lamp with each electrode held by a sealing portion | Takuya Tsukamoto, Nobuhiko Sugihara, Toyohiko Kumada | 2011-12-06 |