Issued Patents All Time
Showing 76–100 of 102 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6791681 | Apparatus and method for determining existence range of foreign substance | Yasuhiro Gotoh | 2004-09-14 |
| 6728192 | Tracking error signal detection system for optical recording medium | Shin-ichi Kadowaki, Shinichi Tanaka, Kousei Sano, Seiji Nishino | 2004-04-27 |
| 6704254 | Optical disk device, control method of optical system, medium, and information aggregate | Kazuo Momoo, Junji Nagaoka | 2004-03-09 |
| 6674709 | Optical head apparatus | Junichi Asada, Yuichi Takahashi, Kenji Nagashima, Hiroaki Matsumiya, Youichi Saitoh +1 more | 2004-01-06 |
| 6618343 | Optical information processor and optical element | Youichi Saitoh, Junichi Asada, Yuichi Takahashi, Kenji Nagashima, Kazuo Momoo +1 more | 2003-09-09 |
| 6594042 | Optical element, optical pickup, information recording and reproducing method, and polarizing hologram | Junichi Asada, Youichi Saitoh | 2003-07-15 |
| 6567372 | Optical disk and optical disk apparatus with tracks and grooves | Kouichi Takamine, Shin-ichi Yamada, Takashi Ishida, Atsushi Nakamura | 2003-05-20 |
| 6504660 | Prism and manufacturing method thereof, optical beam shaping apparatus and optical head device utilizing such prism, and optical beam shaping method | Tetsuo Saimi | 2003-01-07 |
| 6496453 | Optical pickup | Junichi Asada, Kenji Nagashima, Hiroshi Kayama, Youichi Saitoh | 2002-12-17 |
| 6459664 | Optical disc tilt control apparatus | Shin-ichi Yamada, Masayoshi Abe, Hiroyuki Yamaguchi, Kouichi Takamine | 2002-10-01 |
| 6327238 | Optical disk device | Tetsuo Saimi | 2001-12-04 |
| 6307827 | Optical device and information recording and reproducing device | — | 2001-10-23 |
| 6185056 | Prism and manufacturing method thereof, optical beam shaping apparatus and optical head device utilizing such prism, and optical beam shaping method | Tetsuo Saimi | 2001-02-06 |
| 6009054 | Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus | Shin-ichi Kadowaki, Shinichi Tanaka, Kousei Sano, Seiji Nishino | 1999-12-28 |
| 5892741 | Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus | Shin-ichi Kadowaki, Shinichi Tanaka, Kousei Sano, Seiji Nishino | 1999-04-06 |
| 5745221 | Exposure equipment | Junichi Asada, Keiichi Matsuzaki | 1998-04-28 |
| 5684900 | Wavelength locking device, beam collimating device, and optical disk apparatus | Junichi Asada | 1997-11-04 |
| 5495462 | Light beam splitting apparatus | Tetsuo Kitagawa, Junichi Asada, Kiyoko Ooshima | 1996-02-27 |
| 5343038 | Scanning laser microscope with photo coupling and detecting unit | Junichi Asada, Shinji Uchida | 1994-08-30 |
| 5313450 | Optical disk drive | Junichi Asada, Shinji Uchida | 1994-05-17 |
| 5307184 | Exposure apparatus | Junichi Asada, Shinji Uchida | 1994-04-26 |
| 5200939 | Optical head apparatus including a waveguide layer with concentric or spiral periodic structure | Yoshinao Taketomi, Shinji Uchida, Takaaki Tomita, Junichi Asada | 1993-04-06 |
| 5193130 | Light deflecting device | Yoshinao Taketomi, Shinji Uchida, Takaaki Tomita, Junichi Asada | 1993-03-09 |
| 5181265 | Optical coupling apparatus for introducing and coupling an incident light into a wave guide | Shinji Uchida, Junichi Asada | 1993-01-19 |
| 5159650 | Optical disk apparatus for recording and reproducing ultra-high density signals | Shinji Uchida, Junichi Asada | 1992-10-27 |