Inventor
TSUDA SHIRO
JP13 patents
⚠️ This page may combine multiple inventors who share the name “TSUDA SHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FERROTEC CORP
11 patentsUS7729504B2Jun 1, 2010
Ferrofluid centered voice coil speaker
FERROTEC CORP20 citations92
US6804368B2Oct 12, 2004
Micro-speaker and method for assembling a micro-speaker
FERROTEC CORP18 citations92
US6056889AMay 2, 2000
Process for producing a magnetic fluid and composition therefor
FERROTEC CORP30 citations88
US5676877AOct 14, 1997
Process for producing a magnetic fluid and composition therefor
FERROTEC CORP15 citations80
US5879580AMar 9, 1999
Ferrofluid having improved oxidation resistance
FERROTEC CORP16 citations78
US7063802B2Jun 20, 2006
Composition and method of making an element-modified ferrofluid
FERROTEC CORP14 citations76
US7248714B2Jul 24, 2007
Micro-speaker and method for assembling a micro-speaker
FERROTEC CORP5 citations73
US5730893AMar 24, 1998
Magnetic colloids using acid terminated poly (12-hydroxystearic acid) dispersants
FERROTEC CORP10 citations73
US5656196AAug 12, 1997
Ferrofluid having improved oxidation resistance
FERROTEC CORP6 citations70
US7266214B2Sep 4, 2007
Audio speaker and method for assembling an audio speaker
FERROTEC CORP4 citations62
US6868167B2Mar 15, 2005
Audio speaker and method for assembling an audio speaker
FERROTEC CORP4 citations62