Inventor
TAKEWA HIROYUKI
JP37 patents
⚠️ This page may combine multiple inventors who share the name “TAKEWA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
23 patentsUS5025474AJun 18, 1991
Speaker system with image projection screen
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD146 citations97
US5664024ASep 2, 1997
Loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD83 citations95
US5512715AApr 30, 1996
Sound absorber
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD80 citations95
US7054459B2May 30, 2006
Surrounding structure of a loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD34 citations92
US6973194B2Dec 6, 2005
Speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations92
US6757404B2Jun 29, 2004
Loud speaker, diaphragm and process for making the diaphragm
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD37 citations92
US6747395B1Jun 8, 2004
Piezoelectric loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD38 citations92
US6700987B2Mar 2, 2004
Loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD26 citations92
US6305491B2Oct 23, 2001
Speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD29 citations92
US5862242AJan 19, 1999
Speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD37 citations92
US5150418ASep 22, 1992
Speaker system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations92
US4899390AFeb 6, 1990
Thin speaker having an enclosure within an open portion and a closed portion
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD44 citations92
US4751739AJun 14, 1988
Apparatus and method for controlling tone quality
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations92
US6069965AMay 30, 2000
Loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD25 citations89
US6842529B2Jan 11, 2005
Speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations84
US6836551B2Dec 28, 2004
Loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations84
US6714655B2Mar 30, 2004
Speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations84
US6655495B2Dec 2, 2003
Loudspeaker damper and loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations83
US5073946ADec 17, 1991
Thin speaker having an enclosure with an open portion and a closed portion
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD19 citations82
US4353432AOct 12, 1982
Electro-dynamic speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74
US7447328B2Nov 4, 2008
Loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations73
USD560213SJan 22, 2008
Diaphragm for speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations63
US4484383ANov 27, 1984
Method of manufacturing a speaker diaphragm
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations62
TAKEWA HIROYUKI
5 patentsUS8553926B2Oct 8, 2013
Speaker and electronic device
TAKEWA HIROYUKI6 citations72
US8422727B2Apr 16, 2013
Electro-acoustical transducer
TAKEWA HIROYUKI5 citations72
US8422723B2Apr 16, 2013
Loudspeaker and electronic device including loudspeaker
TAKEWA HIROYUKI4 citations62
US8131002B2Mar 6, 2012
Electric-acoustic transducer and electronic device
TAKEWA HIROYUKI5 citations62
US8879776B2Nov 4, 2014
Speaker and electronic device using the speaker
TAKEWA HIROYUKI2 citations59
PANASONIC CORP
4 patentsUS8031902B2Oct 4, 2011
Loudspeaker
PANASONIC CORP14 citations84
US7873179B2Jan 18, 2011
Speaker
PANASONIC CORP11 citations84
US9106992B2Aug 11, 2015
Loudspeaker and electronic equipment including the loudspeaker
PANASONIC CORP0 citations52
US8363880B2Jan 29, 2013
Speaker and electronic device including the same
PANASONIC CORP0 citations52