Issued Patents All Time
Showing 26–50 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8154977 | Reflecting wavelength plate and optical pickup using reflecting wavelength plate | Kazuhiro Umeki, Toshimichi Nasukawa | 2012-04-10 |
| 8089848 | Optical pickup and optical information processing apparatus | Yukiko Hamano | 2012-01-03 |
| 8036089 | Optical pick-up, method of generating aberration for compensation and optical information processing apparatus using the same | — | 2011-10-11 |
| 7929398 | Optical pickup and optical data processing device using the same | — | 2011-04-19 |
| 7894133 | Optical element and optical device | Yoshiyuki Kiyosawa, Kazuhiro Umeki, Yasuhiro Fujimura | 2011-02-22 |
| 7872957 | Optical pickup and optical data processing device using the same | — | 2011-01-18 |
| 7848209 | Optical pickup and optical information processing apparatus with light sources of three different wavelengths | — | 2010-12-07 |
| 7813233 | Information recording and reproduction apparatus including optical pickup unit | — | 2010-10-12 |
| 7796490 | Optical pickup and optical information processing apparatus | — | 2010-09-14 |
| 7738340 | Optical disk apparatus with aberration correcting part, and optical disk | Tetsuya Ogata | 2010-06-15 |
| 7697395 | Optical device, method of producing the same, optical pickup, and optical information processing device | Kazuhiro Umeki | 2010-04-13 |
| 7596071 | Objective lens, optical pickup, and optical information processing apparatus using the same | — | 2009-09-29 |
| 7577070 | Optical recording medium tilt compensation device, tilt compensation method, and optical information recording apparatus | Toshiyuki Kawasaki | 2009-08-18 |
| 7502300 | Optical pickup and optical data processing apparatus | Toshimichi Nasukawa, Kazuhiro Umeki | 2009-03-10 |
| 7492990 | Optical switching element, optical switching device, and color image displaying apparatus | Tsuyoshi Hashiguchi | 2009-02-17 |
| 7457222 | Optical element, optical pickup unit, and optical disk drive unit | Shigeru Ohuchida | 2008-11-25 |
| 7450486 | Optical pickup and optical information processing apparatus | — | 2008-11-11 |
| 7406023 | Optical reproduction method, optical pickup device, optical reproduction device, and optical recording medium | — | 2008-07-29 |
| 7385906 | Objective lens, optical pickup, and optical information processing apparatus using the same | — | 2008-06-10 |
| 7382715 | Optical recording medium having relationship between pit depths, wavelength and refractive index | — | 2008-06-03 |
| 7345967 | Optical pickup unit | — | 2008-03-18 |
| 7313074 | Objective lens, optical, pickup and optical information processing apparatus using the same | — | 2007-12-25 |
| 7274646 | Object lens for an infinite-type optical pickup, optical pickup and optical information processing device | — | 2007-09-25 |
| 7197003 | Optical element, optical pickup unit, and optical disk drive unit | Shigeru Ohuchida | 2007-03-27 |
| 7142497 | Optical pickup and optical information processing apparatus with light sources of three different wavelengths | — | 2006-11-28 |