Inventor
OSADA YASUO
JP43 patents
⚠️ This page may combine multiple inventors who share the name “OSADA YASUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
26 patentsUS5335218AAug 2, 1994
Disc loading transfer mechanism for plural disc changer
SONY CORP33 citations92
US6430143B1Aug 6, 2002
Optical pickup device and optical disc recording and/or reproducing apparatus
SONY CORP26 citations88
US7103895B2Sep 5, 2006
Optical pickup device, and recorder and/or player
SONY CORP9 citations74
US6421191B1Jul 16, 2002
Apparatus for driving an objective lens
SONY CORP10 citations74
US5859832AJan 12, 1999
Recording and/or reproducing apparatus with disc stocker and transport
SONY CORP6 citations74
US5757740AMay 26, 1998
Recording and/or reproducing apparatus using cartridges within which recording media are accommodated and loading device for cartridge
SONY CORP8 citations74
US5717681AFeb 10, 1998
Movement apparatus and recording/reproducing apparatus
SONY CORP6 citations74
US5247408ASep 21, 1993
Disc chucking apparatus
SONY CORP17 citations72
US4547823AOct 15, 1985
Mode changing apparatus
SONY CORP19 citations71
US7677354B2Mar 16, 2010
Electronic apparatus having speaker unit incorporated therein
SONY CORP3 citations63
US7174559B2Feb 6, 2007
Disk drive with optical pickup guiding and disk table restricting element
SONY CORP2 citations63
US6983473B2Jan 3, 2006
Optical pickup device and recording and/or reproducing device
SONY CORP3 citations63
US6971114B2Nov 29, 2005
Optical pickup device and recording and/or reproducing device
SONY CORP2 citations63
US6301219B1Oct 9, 2001
Device of loading recording medium
SONY CORP6 citations63
US5872765AFeb 16, 1999
Disc loading device
SONY CORP3 citations63
US5859827AJan 12, 1999
Movement apparatus and recording/reproducing apparatus
SONY CORP1 citations63
US4395778AJul 26, 1983
Undesired signal canceller
SONY CORP6 citations62
US7313800B2Dec 25, 2007
Disk centering system
SONY CORP5 citations61
US7012868B2Mar 14, 2006
Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up
SONY CORP1 citations61
US7006410B2Feb 28, 2006
Optical disk for adjusting optical pickup, method for adjusting optical pickup, and device for adjusting optical pickup
SONY CORP3 citations61
US4568989AFeb 4, 1986
Mode changing apparatus for a tape recorder
SONY CORP4 citations60
US6880163B2Apr 12, 2005
Optical pickup device and recording and/or reproducing device
SONY CORP1 citations52
US7020059B2Mar 28, 2006
Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up
SONY CORP0 citations50
US7249362B2Jul 24, 2007
Disk chucking mechanism and disk drive device with increased positional accuracy
SONY CORP0 citations42
US7219360B2May 15, 2007
Disc chucking mechanism and disc drive apparatus having the same
SONY CORP0 citations42
US6836460B2Dec 28, 2004
Disk drivingly rotating device with centering mechanism
SONY CORP0 citations39
MINEBEA MITSUMI INC
13 patentsUS12345550B2Jul 1, 2025
Absolute encoder
MINEBEA MITSUMI INC2 citations75
US11561117B2Jan 24, 2023
Absolute encoder for detecting rotation angle
MINEBEA MITSUMI INC6 citations75
US11913784B2Feb 27, 2024
Reduction mechanism and absolute encoder
MINEBEA MITSUMI INC3 citations73
US11906300B2Feb 20, 2024
Absolute encoder
MINEBEA MITSUMI INC4 citations73
US11365984B2Jun 21, 2022
Absolute encoder
MINEBEA MITSUMI INC5 citations73
US11079257B2Aug 3, 2021
Absolute encoder and method for determining rotation amount
MINEBEA MITSUMI INC2 citations73
US12104928B2Oct 1, 2024
Absolute encoder
MINEBEA MITSUMI INC2 citations71
US12092453B2Sep 17, 2024
Absolute encoder
MINEBEA MITSUMI INC2 citations71
US11404938B2Aug 2, 2022
Angle detection apparatus, rotation amount specification unit, and rotary driving unit
MINEBEA MITSUMI INC3 citations71
US12292311B2May 6, 2025
Absolute encoder
MINEBEA MITSUMI INC2 citations66
US12435967B2Oct 7, 2025
Magnetism detection device and absolute encoder
MINEBEA MITSUMI INC0 citations62
US12560458B2Feb 24, 2026
Absolute encoder
MINEBEA MITSUMI INC0 citations61
US11852511B2Dec 26, 2023
Absolute encoder
MINEBEA MITSUMI INC0 citations49