MY

Masahiko Yatsu

HI Hitachi: 82 patents #58 of 28,497Top 1%
MA Maxell: 45 patents #10 of 437Top 3%
HS Hitachi Industry & Control Solutions: 19 patents #1 of 84Top 2%
HC Hitachi Consumer Electronics Co.: 13 patents #5 of 447Top 2%
HM Hitachi Maxell: 5 patents #189 of 1,211Top 20%
HS Hitachi Video And Information Systems: 3 patents #39 of 269Top 15%
HI Hiatchi: 1 patents #1 of 84Top 2%
Overall (All Time): #6,431 of 4,157,543Top 1%
147
Patents All Time

Issued Patents All Time

Showing 126–147 of 147 patents

Patent #TitleCo-InventorsDate
6832836 Optical unit and projection type projector apparatus using the same Koji Hirata, Futoshi Yamasaki 2004-12-21
6829031 Liquid crystal display apparatus and optical device for use therein Toru Numata, Yasuo Otsuka, Mikio Shiraishi, Koji Hirata, Naoyuki Ogura +3 more 2004-12-07
6824273 Liquid crystal projector, and projection lens unit, optical unit and cooling system for the same Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi +16 more 2004-11-30
6783242 Projection apparatus and projection-type image display apparatus Koji Hirata, Futoshi Yamasaki 2004-08-31
6783245 Liquid crystal projector, and projection lens unit, optical unit and cooling system for the same Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi +16 more 2004-08-31
6741396 Array lens, lighting optical system, optical unit and imaging apparatus Satoshi Ohuchi, Taro Imahase, Tomohiro Miyoshi, Yasuo Otsuka, Takesuke Maruyama 2004-05-25
6705730 Picture display device Tetsuya Ohshima, Hiroki Kaneko, Kazutaka Tsuji, Akira Arimoto, Osamu Ebina 2004-03-16
6573950 Optical projection apparatus, transmission type screen, and projection type image display apparatus Koji Hirata, Naoyuki Ogura, Hidehiro Ikeda 2003-06-03
6567218 Array lens, lighting optical system, optical unit and imaging apparatus Satoshi Ohuchi, Taro Imahase, Tomohiro Miyoshi, Yasuo Otsuka, Takesuke Maruyama 2003-05-20
6560041 Projection lens apparatus and projection type image display apparatus Hidehiro Ikeda, Koji Hirata, Junichi Ikoma 2003-05-06
6545812 Array lens, lighting optical system, optical unit and imaging apparatus Satoshi Ohuchi, Taro Imahase, Tomohiro Miyoshi, Yasuo Otsuka, Takesuke Maruyama 2003-04-08
6535267 Liquid crystal display apparatus having liquid crystal display element immersed in cooling medium Toru Numata, Yasuo Otsuka, Mikio Shiraishi, Koji Hirata, Naoyuki Ogura +3 more 2003-03-18
6416182 Projection type liquid crystal display device Takashi Kakuda, Satoshi Ouchi, Naohiro Ozawa, Yutaka Matsuda, Takuya Shiaki 2002-07-09
6411440 Array lens, lighting optical system, optical unit and imaging apparatus Satoshi Ohuchi, Taro Imahase, Tomohiro Miyoshi, Yasuo Otsuka, Takesuke Maruyama 2002-06-25
6392809 Array lens, lighting optical system, optical unit and imaging apparatus Satoshi Ohuchi, Taro Imahase, Tomohiro Miyoshi, Yasuo Otsuka, Takesuke Maruyama 2002-05-21
6290360 Liquid crystal projector, and projection lens unit, optical unit and cooling system for the same Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi +16 more 2001-09-18
6256083 Liquid crystal display apparatus and optical device for use therein Toru Numata, Yasuo Otsuka, Mikio Shiraishi, Koji Hirata, Naoyuki Ogura +3 more 2001-07-03
6201645 Array lens, lighting optical system, optical unit and imaging apparatus Satoshi Ohuchi, Taro Imahase, Tomohiro Miyoshi, Yasuo Otsuka, Takesuke Maruyama 2001-03-13
6062695 Projection type liquid crystal display device Takashi Kakuda, Satoshi Ouchi, Naohiro Ozawa, Yutaka Matsuda, Takuya Shiaki 2000-05-16
5748238 Video camera Manabu Wakabayashi, Kenji Ogiro, Takanori Nishiyama, Hiroto Takita, Yutaka Takami +6 more 1998-05-05
5565919 Video camera/VTR and camera station with opto-electronic link between camera/VTR and camera station Manabu Wakabayashi, Kenji Ogiro, Takanori Nishiyama, Hiroto Takita, Yutaka Takami +6 more 1996-10-15
5048939 Zoom lens system Masaharu Deguchi, Takesuke Maruyama, Hironobu Satoh, Kenji Kobayashi, Kenji Sano 1991-09-17