Assignee
FERROTEC CORP
JP17 patents
Top patents by PatentIndex Score
US7729504B2Jun 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
US6305694B1Oct 23, 2001
Ferrofluid sealing device
FERROTEC CORP29 citations83
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
US5876037AMar 2, 1999
Magnetic fluid sealing device
FERROTEC CORP13 citations65
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
US7976612B2Jul 12, 2011
Droplet removing device and method in plasma generator
FERROTEC CORP5 citations57
US9448262B2Sep 20, 2016
Current sensor having at least one cancel coil
FERROTEC CORP2 citations55
US7823537B2Nov 2, 2010
Plasma generator
FERROTEC CORP0 citations48
US8007176B2Aug 30, 2011
Dynamic pressure bearing and rotation machine employing same
FERROTEC CORP0 citations38