Issued Patents 1994
Showing 1–8 of 8 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, Toshiyuki Kase, Ryota Ogawa +2 more | 1994-12-13 |
| 5343332 | Apparatus for adjusting optical axis including a beam shaping prism | Koichi Maruyama, Makoto Iki, Hitoshi Kimura, Masahiko Sasaki | 1994-08-30 |
| 5341246 | Apparatus for adjusting an optical axis including plates on opposite sides of a beam shaping prism | Koichi Maruyama, Makoto Iki, Hitoshi Kimura, Masahiko Sasaki | 1994-08-23 |
| 5317144 | Wave front aberration measuring apparatus having means for adjusting position of collimator lens | Tsuyoshi Itoh, Katsuki Hayashi, Toshiyuki Kase, 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, Toshiyuki Kase, Hiroshi Nishikawa, Ryoto Ogawa +3 more | 1994-03-22 |
| 5280464 | Optical disk apparatus having a focusing error correcting system | Tsuyoshi Itoh, Isao Okuda, Toshiyuki Kase, Hiroshi Nishikawa, Ryota Ogawa +2 more | 1994-01-18 |
| 5278401 | Optical disc apparatus having five light receiving areas for detecting focus error and tracking error | Suguru Takishima, Isao Okuda, Koichi Maruyama, Masato Noguchi | 1994-01-11 |
| 5276497 | Measuring apparatus of mirror surface | — | 1994-01-04 |