Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7023143 | Ballast apparatus and ballasting method of high intensity discharge lamp | Shigeki Harada, Kikuo Izumi, Takahiro Urakabe, Akihiko Iwata, Takashi Ohsawa | 2006-04-04 |