SN

Seiji Nishiwaki

PA Panasonic: 59 patents #152 of 21,108Top 1%
Sumitomo Electric Industries: 43 patents #229 of 21,551Top 2%
📍 Kasai, JP: #20 of 5,842 inventorsTop 1%
Overall (All Time): #13,979 of 4,157,543Top 1%
102
Patents All Time

Issued Patents All Time

Showing 76–100 of 102 patents

Patent #TitleCo-InventorsDate
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