Issued Patents 1994
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373437 | Device for and method of reducing cross talk in optical disk device | Tsuyoshi Itoh, Isao Okuda, Hiroshi Nishikawa, Ryota Ogawa, Masahiro Oono +2 more | 1994-12-13 |
| 5337300 | Signal sensing device of magneto-optic disk device for detecting error signal and information record signals with common photo sensor | Suguru Takishima | 1994-08-09 |
| 5317144 | Wave front aberration measuring apparatus having means for adjusting position of collimator lens | Masahiro Oono, Tsuyoshi Itoh, Katsuki Hayashi, Masahiko Sasaki, Hiroshi Yamamoto +1 more | 1994-05-31 |
| 5297114 | Magneto-optic recording/reproduction apparatus for minimizing variation in focusing error signals caused by variation in optical source wavelength | Tsuyoshi Itoh, Isao Okuda, Hiroshi Nishikawa, Ryoto Ogawa, Masahiro Oono +3 more | 1994-03-22 |
| 5280464 | Optical disk apparatus having a focusing error correcting system | Tsuyoshi Itoh, Isao Okuda, Hiroshi Nishikawa, Ryota Ogawa, Masahiro Oono +2 more | 1994-01-18 |