P

Inventor

HAMAGUCHI SHINGO

JP21 patents
⚠️ This page may combine multiple inventors who share the name “HAMAGUCHI SHINGO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJITSU LTD

14 patents
US7002758B2Feb 21, 2006

Collimator optical system and optical information storage device

FUJITSU LTD16 citations92
US5859819AJan 12, 1999

Tracking and focus control system for optical disk apparatus

FUJITSU LTD41 citations92
US5619482AApr 8, 1997

Optical head unit for an optical disk using a diffraction grating

FUJITSU LTD20 citations92
US7099097B2Aug 29, 2006

Thermally assisted magnetic recording method

FUJITSU LTD14 citations84
US7561360B2Jul 14, 2009

Magnetic recording medium

FUJITSU LTD7 citations73
US6865039B2Mar 8, 2005

Master medium for magnetic transfer, magnetic transferring and recording method, slave medium for magnetic recording, and method for producing a master medium for magnetic transfer

FUJITSU LTD7 citations73
US5473587ADec 5, 1995

Track retrieval system for optical disk

FUJITSU LTD16 citations72
US5648947AJul 15, 1997

Optical disk device having track jumping control

FUJITSU LTD15 citations71
US5422867AJun 6, 1995

Access control circuit for use in optical disk unit

FUJITSU LTD7 citations71
US7102825B2Sep 5, 2006

Collimator optical system and optical information storage device

FUJITSU LTD2 citations62
US6898798B2May 24, 2005

Disk cartridge having anti-static layer and disk apparatus for driving the same

FUJITSU LTD5 citations62
US6757221B1Jun 29, 2004

Optical head having object lens and patterned coil

FUJITSU LTD6 citations61
US6272079B1Aug 7, 2001

Optical head unit for optical disk apparatus having both focus control and track control function

FUJITSU LTD6 citations61
US9787946B2Oct 10, 2017

Picture processing device and method

FUJITSU LTD0 citations41

FURYU CORP

5 patents

TOSHIBA STORAGE DEVICE CORP

1 patent

MEGACHIPS CORP

1 patent