P

Inventor

ANDO NOBUHIKO

JP45 patents
⚠️ This page may combine multiple inventors who share the name “ANDO NOBUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SONY CORP

28 patents
US5379990AJan 10, 1995

Shock absorber device for a portable electronic apparatus

SONY CORP64 citations95
US6392977B2May 21, 2002

Optical pickup with a hologram to limit the aperture of two light beams with different wavelengths

SONY CORP26 citations93
US5559769ASep 24, 1996

Recording/reproducing apparatus for both read-only and magneto-optical disc-shaped recording medium

SONY CORP22 citations93
US5523994AJun 4, 1996

Magneto-optical recording/reproducing apparatus with optical pickup device having a multi-layer dielectric film beam splitter

SONY CORP24 citations93
US5479387ADec 26, 1995

Optical head including multiple photo detectors for reading signals and error signals for servoing from both a read-only recording medium and a magneto-optical recording medium

SONY CORP23 citations93
US5467336ANov 14, 1995

Magneto-optical recording/reproducing apparatus with optical pickup device having a multi-layer dielectric film beam splitter

SONY CORP26 citations93
US5453607ASep 26, 1995

Photodetector for recording/reproducing apparatus for both read only and magneto-optical disk shaped recording medium

SONY CORP26 citations93
US5341357AAug 23, 1994

Optical disc recording apparatus

SONY CORP39 citations93
US6252686B1Jun 26, 2001

Optical pickup device

SONY CORP19 citations92
US6347015B2Feb 12, 2002

Optical pickup device

SONY CORP7 citations74
US6337774B2Jan 8, 2002

Optical pickup device

SONY CORP5 citations74
US5719845AFeb 17, 1998

Optical pick-up device composed of composite prism made of uniaxial crystal and non-axial crystal

SONY CORP7 citations74
US5550798AAug 27, 1996

Enhanced optical beam splitter to increase the kerr rotation angle

SONY CORP11 citations73
US5428596AJun 27, 1995

Optical pickup apparatus

SONY CORP11 citations73
US9672859B2Jun 6, 2017

Optical medium reproduction apparatus and optical medium reproduction method

SONY CORP3 citations72
US6744720B2Jun 1, 2004

Optical element and optical pick-up

SONY CORP3 citations63
US6335836B2Jan 1, 2002

Optical pickup device

SONY CORP2 citations63
US5923633AJul 13, 1999

Optical reproducing device compatible with multiple media recording densities

SONY CORP6 citations63
US5684780ANov 4, 1997

Optical pickup device having optical element exhibiting polarized light selectivity loaded thereon and optical apparatus having the optical pickup device loaded thereon

SONY CORP5 citations63
US7154839B2Dec 26, 2006

Optical pickup apparatus and signal recording and/or reproducing apparatus

SONY CORP2 citations62
US8000189B2Aug 16, 2011

Optical pickup and optical disk device

SONY CORP3 citations61
US9767837B2Sep 19, 2017

Optical medium reproduction apparatus and optical medium reproduction method

SONY CORP1 citations51
US8976640B2Mar 10, 2015

Information recording medium and disc

SONY CORP0 citations51
US7447136B2Nov 4, 2008

Optical pickup and optical disc apparatus

SONY CORP1 citations51
US9990952B2Jun 5, 2018

Optical medium reproducing device and optical medium reproducing method

SONY CORP0 citations42
US10014023B2Jul 3, 2018

Optical medium reproducing apparatus, optical medium reproducing method, and optical medium

SONY CORP0 citations41
US10176838B2Jan 8, 2019

Optical disc device

SONY CORP0 citations40
US9847100B2Dec 19, 2017

Optical medium reproduction device and optical medium reproduction method

SONY CORP0 citations37

NSK LTD

5 patents

MITSUBISHI ELECTRIC CORP

4 patents

ANDO NOBUHIKO

2 patents

HITACHI LTD

2 patents

YAMAMOTO MASAYUKI

1 patent

TAKAHASHI RYOHEI

1 patent

NAKANO FUMIAKI

1 patent

MORISHIGE YUSAKU

1 patent