HF

Hirotoshi Fujisawa

SO Sony: 42 patents #648 of 25,231Top 3%
JW Japan Display West: 2 patents #60 of 194Top 35%
Overall (All Time): #68,342 of 4,157,543Top 2%
44
Patents All Time

Issued Patents All Time

Showing 26–44 of 44 patents

Patent #TitleCo-InventorsDate
5530691 Disc cartridge 1996-06-25
5523891 Objective lens driving device and method for producing resilient supporting member provided in objective lens driving device 1996-06-04
D369151 Optical disc cartridge 1996-04-23
D369152 Optical disc cartridge 1996-04-23
D369153 Optical disc cartridge 1996-04-23
5506023 Magneto-optical disc Takashi Ohmori, Tadao Yoshida 1996-04-09
5497366 Optical-pick up device using multi-lens holder 1996-03-05
5467239 Disc cartridge withribbed shutter 1995-11-14
5367422 Disc cartridge having mistaken recording inhibiting mechanism Kenji Takahashi 1994-11-22
5363362 Apparatus for reproducing recorded data comprising interleaved clusters and cluster linking sectors Yasuaki Maeda, Ryo Ando, Hideo Obata, Hideki Nagashima, Tadao Yoshida +2 more 1994-11-08
5357498 Disc drive apparatus that positions an objective lens within a disc cartridge at the time when the disc is rotated Tadao Yoshida 1994-10-18
RE34710 Magneto-optical recording apparatus Takashi Ohmori, Ryo Ando 1994-08-30
5309421 Recording and/or reproducing apparatus for optical disk 1994-05-03
D343613 Shutter for an optical disc cartridge 1994-01-25
5272693 Disc cartridge having a shutter 1993-12-21
D340032 Optical disk cartridge 1993-10-05
5243588 Method and apparatus for reading digital data bursts comprising data clusters and cluster linking sectors Yasuaki Maeda, Ryo Ando, Hideo Obata, Hideki Nagashima, Tadao Yoshida +2 more 1993-09-07
5072431 Magneto-optical disk recording apparatus Takashi Ohmori 1991-12-10
5034933 Magneto-optical recording apparatus Takashi Ohmori, Ryo Ando 1991-07-23