Inventor
IWASA MIKIO
JP13 patents
⚠️ This page may combine multiple inventors who share the name “IWASA MIKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
12 patentsUS4823908AApr 25, 1989
Directional loudspeaker system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD192 citations99
US5664024ASep 2, 1997
Loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD83 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
US6305491B2Oct 23, 2001
Speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD29 citations92
US5862242AJan 19, 1999
Speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD37 citations92
US6069965AMay 30, 2000
Loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD25 citations89
US6714655B2Mar 30, 2004
Speaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations84
US6655495B2Dec 2, 2003
Loudspeaker damper and loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations83
US7447328B2Nov 4, 2008
Loudspeaker
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations73