Inventor

SAIKI SHUJI

JP70 patents

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

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

25 patents

US6208237B1Mar 27, 2001

Electro-mechanical and acoustic transducer for portable terminal unit

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD172 citations99

US7382890B2Jun 3, 2008

Sound reproduction device and portable terminal apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD58 citations98

US7050600B2May 23, 2006

Speaker system, mobile terminal device, and electronic device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD103 citations97

US7106878B2Sep 12, 2006

Speaker and mobile terminal device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD56 citations96

US5325435AJun 28, 1994

Sound field offset device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD86 citations96

US4924962AMay 15, 1990

Sound reproducing apparatus for use in vehicle

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD64 citations94

US7120264B2Oct 10, 2006

Sound reproducing apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD39 citations92

US6920957B2Jul 26, 2005

Loudspeaker diaphragm

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD39 citations92

US6700987B2Mar 2, 2004

Loudspeaker

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD26 citations92

US6658133B1Dec 2, 2003

Electromagnetic transducer and portable communicating device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD34 citations92

US6259935B1Jul 10, 2001

Electro-mechanical-acoustic transducing device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD34 citations92

US5371805ADec 6, 1994

Speaker and speaker system employing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD54 citations92

US5150418ASep 22, 1992

Speaker system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations92

US4893695AJan 16, 1990

Speaker system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD45 citations92

US7212648B2May 1, 2007

Loudspeaker system in which a diaphragm panel is driven by an electromechanical acoustic converter

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations84

US7194287B2Mar 20, 2007

Electric-mechanical-acoustic-transducer and portable communication device including the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations84

US7006641B1Feb 28, 2006

Driving circuit, electro-mechanical-acoustic transducer, and portable terminal apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations84

US6920230B2Jul 19, 2005

Electromagnetic transducer and portable communication device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations84

US6836551B2Dec 28, 2004

Loudspeaker

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations84

US6671383B2Dec 30, 2003

Electromagnetic transducer and portable communication device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations84

US5073946ADec 17, 1991

Thin speaker having an enclosure with an open portion and a closed portion

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD19 citations82

US4300655ANov 17, 1981

Acoustic diaphragm for speakers and method of producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD26 citations81

US4426556AJan 17, 1984

Electrodynamic loudspeaker

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations80

US7231058B2Jun 12, 2007

Electroacoustic transducer and electronic apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74

US7187779B2Mar 6, 2007

Electromagnetic transducer and portable communication device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations74

PANASONIC CORP

13 patents

US7536211B2May 19, 2009

Speaker system, mobile terminal device, and electronic device

PANASONIC CORP45 citations96

US7953240B2May 31, 2011

Loudspeaker apparatus

PANASONIC CORP45 citations94

US7743880B2Jun 29, 2010

Sound absorbing structure

PANASONIC CORP47 citations94

US7991181B2Aug 2, 2011

Loudspeaker system

PANASONIC CORP24 citations93

US7743877B2Jun 29, 2010

Speaker system

PANASONIC CORP30 citations93

US7454025B2Nov 18, 2008

Loudspeaker with internal negative stiffness mechanism

PANASONIC CORP22 citations93

US7974423B2Jul 5, 2011

Loudspeaker system

PANASONIC CORP34 citations92

US7840022B2Nov 23, 2010

Speaker device

PANASONIC CORP26 citations92

US7477755B2Jan 13, 2009

Speaker system

PANASONIC CORP34 citations92

US7463747B2Dec 9, 2008

Loudspeaker system

PANASONIC CORP34 citations92

US7974431B2Jul 5, 2011

Speaker system

PANASONIC CORP12 citations84

US7885425B2Feb 8, 2011

Electrodynamic electroacoustic transducer and electronic device

PANASONIC CORP13 citations84

US7724915B2May 25, 2010

Speaker device

PANASONIC CORP14 citations84

SAIKI SHUJI

5 patents

US8565463B2Oct 22, 2013

Loudspeaker system

SAIKI SHUJI25 citations92

US8335333B2Dec 18, 2012

Speaker system

SAIKI SHUJI35 citations92

US8755558B2Jun 17, 2014

Speaker, hearing aid, earphone, and portable terminal device

SAIKI SHUJI8 citations84

US8699745B2Apr 15, 2014

Speaker, and mobile electronic device

SAIKI SHUJI8 citations84

US8542861B2Sep 24, 2013

Loudspeaker, video device, and portable information processing apparatus

SAIKI SHUJI9 citations84

PANASONIC IP MAN CO LTD

3 patents

US9668058B2May 30, 2017

Speaker diaphragm, speaker, device, and method for manufacturing speaker diaphragm

PANASONIC IP MAN CO LTD9 citations84

US9414151B2Aug 9, 2016

Speaker system

PANASONIC IP MAN CO LTD7 citations84

US9319767B2Apr 19, 2016

Earphone

PANASONIC IP MAN CO LTD19 citations83

MATSUMURA TOSHIYUKI

1 patent

US8184826B2May 22, 2012

Speaker system

MATSUMURA TOSHIYUKI36 citations90

FUKUNISHI YOSHIHARU

1 patent

US8265330B2Sep 11, 2012

Material for speaker device and speaker device using it

FUKUNISHI YOSHIHARU29 citations88

SAKAGUCHI ATSUSHI

1 patent

US8885866B2Nov 11, 2014

Earphone

SAKAGUCHI ATSUSHI18 citations82

PANASONIC IP CORP AMERICA

1 patent

US10735852B2Aug 4, 2020

Speaker system

PANASONIC IP CORP AMERICA4 citations73

Showing the top 50 of 70 patents by PatentIndex Score.