NM

Nobuhide Matsubayashi

OC Olympus Optical Co.: 13 patents #219 of 2,334Top 10%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
HM Hitachi Maxell: 1 patents #659 of 1,211Top 55%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
SC Sanyo Electric Co.: 1 patents #3,644 of 6,347Top 60%
Sharp Kabushiki Kaisha: 1 patents #6,861 of 10,731Top 65%
SO Sony: 1 patents #17,262 of 25,231Top 70%
Overall (All Time): #389,729 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
6169714 Apparatus and method for recording/reproducing magneto-optical information Yasuhito Tanaka, Masaaki Kurebayashi, Takeshi Maeda, Hitoshi Watanabe, Tetsu Watanabe +3 more 2001-01-02
5598389 Signal detector for an optical information reproducing apparatus Junichi Nakano, Hiroshi Ezawa 1997-01-28
5515353 Optical head with forward and return light beam propagating along a common path Yasuhiro Miyazaki 1996-05-07
5404490 Photomagnetic signal detecting device Yoichi Hosaka, Ken Sugawara 1995-04-04
5249171 Opto-magnetic pick-up device including phase difference correcting means Tsuneo Yanagida, Kiichi Kato 1993-09-28
5132953 Multi-beam optical recording/reproducing apparatus for recording/reproducing on a medium having a recording flat part with a guide groove on each side 1992-07-21
5124868 Magneto-optic player with improved C/N ratio Osamu Nakano 1992-06-23
5099470 Apparatus for reproducing information from opto-magnetic record medium 1992-03-24
4721850 Optical pickup device having a detector for detecting the light emitting intensity variation of a semiconductor light emitting element Mitsugu Sakai 1988-01-26
4682311 Photomagnetic differential reproducing system Kiichi Kato 1987-07-21
D288558 Optical pickup for use in optical discs Haruhiko Takemura, Tsuneo Yanagida, Masaharu Sakamoto 1987-03-03
4631712 Optical disk apparatus with beam energy correction for deviations in inclination Hideyuki Kenjyo, Kiichi Kato, Masaharu Sakamoto 1986-12-23
4607359 Optical recording/reproducing apparatus Kiichi Kato, Masaharu Sakamoto 1986-08-19