Inventor
KITADA YASUO
JP16 patents
⚠️ This page may combine multiple inventors who share the name “KITADA YASUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI MEDIA ELECTRON KK
7 patentsUS8040780B2Oct 18, 2011
Optical pickup device and optical disc apparatus
HITACHI MEDIA ELECTRON KK7 citations83
US7567495B2Jul 28, 2009
Optical pickup apparatus and optical disc apparatus using same
HITACHI MEDIA ELECTRON KK5 citations73
US8014258B2Sep 6, 2011
Optical pickup having radially arranged lenses in a low profile construction
HITACHI MEDIA ELECTRON KK0 citations51
US7978587B2Jul 12, 2011
Optical pickup apparatus and optical disc apparatus with a single beam system
HITACHI MEDIA ELECTRON KK0 citations51
US7940630B2May 10, 2011
Optical pick up apparatus with a single beam system and having a diffraction grating
HITACHI MEDIA ELECTRON KK0 citations51
US7885166B2Feb 8, 2011
Optical pick up apparatus with a single beam system and having a diffraction grating
HITACHI MEDIA ELECTRON KK0 citations51
US7733760B2Jun 8, 2010
Optical pickup having radially arranged lenses in a low profile construction
HITACHI MEDIA ELECTRON KK0 citations51
HITACHI LTD
5 patentsUS5493554AFeb 20, 1996
2-laser optical head and recording/reproducing apparatus
HITACHI LTD33 citations92
US5295125AMar 15, 1994
Optical head device for recording/reproduction for recording medium using plural light spots
HITACHI LTD48 citations92
US5555539ASep 10, 1996
Multi-beam split-type optical head for use in optical disk apparatus
HITACHI LTD14 citations73
US5050158ASep 17, 1991
Magnetic clamp for a disk medium
HITACHI LTD14 citations72
US7245574B2Jul 17, 2007
Optical head and its adjusting method and optical disk device using the same
HITACHI LTD7 citations71