Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12362534 | Semiconductor laser driving apparatus, electronic equipment, and manufacturing method of semiconductor laser driving apparatus | Hirohisa Yasukawa | 2025-07-15 |
| 12327980 | Semiconductor laser driving apparatus, electronic equipment, and manufacturing method of semiconductor laser driving apparatus | Motoi Kimura, Hirohisa Yasukawa, Takashi Kobayashi | 2025-06-10 |
| 12261411 | Semiconductor laser driving apparatus, electronic equipment, and manufacturing method of semiconductor laser driving apparatus | Kiyohisa Sakai, Hirohisa Yasukawa | 2025-03-25 |
| 8757808 | Projector having light emission devices | — | 2014-06-24 |
| 8077586 | Optical recording head device, optical recording apparatus, and recording method | Kazuo Watabe, Takashi Usui, Keiichiro Yusu, Chosaku Noda, Kazuto Kuroda +1 more | 2011-12-13 |
| 7688874 | Semiconductor laser driving device, optical head, optical disk device, and semiconductor laser driving method | Kazuo Watabe | 2010-03-30 |
| 7668064 | Optical pickup unit and information recording/reproduction apparatus | Sumitaka Maruyama, Akihito Ogawa, Kazuo Watabe | 2010-02-23 |