Inventor
SUGIYAMA TOSHIO
JP24 patents
⚠️ This page may combine multiple inventors who share the name “SUGIYAMA TOSHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
16 patentsUS4333173AJun 1, 1982
Optical information processor with prismatic correction of laser beam shape
HITACHI LTD61 citations96
US5933407AAug 3, 1999
Structure for supporting optical pickup
HITACHI LTD17 citations92
US5872761AFeb 16, 1999
Optical disk apparatus and optical head thereof
HITACHI LTD17 citations92
US5699341ADec 16, 1997
Optical disk apparatus and optical head thereof
HITACHI LTD19 citations92
US5615204AMar 25, 1997
Structure for supporting optical pickup
HITACHI LTD34 citations92
US4744069AMay 10, 1988
Optical disc apparatus with access system having object lens control
HITACHI LTD27 citations92
US4532619AJul 30, 1985
Method and apparatus for reducing semiconductor laser optical noise
HITACHI LTD37 citations92
US4352981AOct 5, 1982
Photoelectric focus and tracking apparatus
HITACHI LTD34 citations92
US4242608ADec 30, 1980
Motor using Hall effect elements
HITACHI LTD33 citations88
US4411500AOct 25, 1983
Optical system for reproducing information
HITACHI LTD22 citations82
US6069862AMay 30, 2000
Compact optical head including two light emitters having parallel optical axes
HITACHI LTD9 citations73
US4779255AOct 18, 1988
Optical reading/reproducing apparatus
HITACHI LTD7 citations73
US4525823AJun 25, 1985
Optical tracking system
HITACHI LTD13 citations73
US4547871AOct 15, 1985
Two dimensional actuator for moving optical medium of scanning device
HITACHI LTD14 citations72
US7400568B2Jul 15, 2008
Optical device, optical pickup and optical disk apparatus
HITACHI LTD8 citations71
US6388976B1May 14, 2002
Compact optical head including two light emitters having parallel optical axes
HITACHI LTD4 citations62