Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7830773 | Optical pickup for recording and reproducing information with a plurality of types of optical information recording mediums | Masahiko Nishimoto, Shinichi Ijima, Takuya Okuda, Masayuki Ono | 2010-11-09 |
| 7313061 | Optical pickup having a plurality of photodetectors divided into four regions used to obtain both focus and tracking error signals | Masahiko Nishimoto, Shinichi Hamaguchi, Tatsuya Nakamori | 2007-12-25 |
| 7119958 | Diffraction grating element and optical pickup | Masahiro Kato, Hideyuki Nakanishi | 2006-10-10 |
| 6534794 | Semiconductor light-emitting unit, optical apparatus and optical disk system having heat sinking means and a heating element incorporated with the mounting system | Hideyuki Nakanishi, Yoshiaki Komma, Akio Yoshikawa | 2003-03-18 |