Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7554675 | Light wavefront measuring instrument, light wavefront measuring method, and light source adjusting method | Nobuo Takeshita, Toshiya Matozaki, Michihiro Tadokoro | 2009-06-30 |
| 6846080 | Image display apparatus | Yoko Inoue, Yoshiyuki Goto, Akira Sekiguchi | 2005-01-25 |
| 6108283 | Optical head having focus error detection and tracking error detection sensors arranged on substantially the same plane | Morihiro Karaki | 2000-08-22 |
| 5886964 | Optical head tracking error detection device | — | 1999-03-23 |
| 5864525 | Optical disk device | Nobuo Takeshita | 1999-01-26 |
| 5687032 | Optical device inclination angle adjuster | Nobuo Takeshita, Morihiro Karaki, Mitsuru Irie, Kazuhiko Nakane, Kenjiro Kime +1 more | 1997-11-11 |
| 5532987 | Focus error detecting device | Morihiro Karaki, Mitsuru Irie, Kazuhiko Nakane | 1996-07-02 |
| 5453962 | Focus error detecting device | Morihiro Karaki, Mitsuru Irie, Kazuhiko Nakane | 1995-09-26 |
| 5359588 | Optical recording/reproducing apparatus | Masahisa Shinoda, Naoyuki Egusa, Yasuyuki Sato, Manabu Koike | 1994-10-25 |
| 5313447 | Optical head | Nobuo Takeshita, Kenjiro Kime, Hiroo Shimegi, Kazuo Okada | 1994-05-17 |
| 5138592 | Optical read/write apparatus with improved tracking performance | — | 1992-08-11 |
| 5068843 | Optical read-write apparatus | Nobuo Takeshita | 1991-11-26 |
| 5033040 | Optical information recording and reproducing apparatus with tracking error control | — | 1991-07-16 |
| 5031165 | Optical information recording/reproducing apparatus | — | 1991-07-09 |
| 4999826 | Focused-spot-position detection device for optical information recording and reproducing device | — | 1991-03-12 |
| 4888757 | Focused-spot-position detection device for optical information recording and reproducing device | — | 1989-12-19 |
| 4718052 | Head assembly for optical disc | Mitsushige Kondo, Shinsuke Shikama, Keizo Kono | 1988-01-05 |
| 4672187 | Focusing error detecting device in head assembly for optical disc | Keizo Kono, Mitsushige Kondo, Shinsuke Shikama | 1987-06-09 |