Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7884555 | Discharge lamp ballast apparatus | Takashi Ohsawa | 2011-02-08 |
| 7613020 | Discharge lamp ballast apparatus comprising DC/DC converters having at least two transformers and outputting two kinds of voltages | Takashi Ohsawa | 2009-11-03 |
| 7298095 | Discharge lamp ballast apparatus | Takashi Ohsawa | 2007-11-20 |