Assignee
INVISA INC
US·5 granted patents·54 citations·filing 2001–2005
Top patents by PatentIndex Score
5 records- 0181US7187282B2Digital capacitive sensing device for security and safety applicationsINVISA INC·Filed 2005·Granted Mar 6, 2007·24 cites·37 claims
- 0261US7167093B2Method of steering capacitor fields for use in capacitive sensing security systemsINVISA INC·Filed 2003·Granted Jan 23, 2007·23 cites·17 claims
- 0340US7193522B2Apparatus and circuit for use with capacitive presence detection systemsINVISA INC·Filed 2001·Granted Mar 20, 2007·4 cites·3 claims
- 0437US7023222B2Apparatus and method for processing capacitor sensor signals using digital frequency shift measurement techniques with floating referenceINVISA INC·Filed 2003·Granted Apr 4, 2006·2 cites·20 claims
- 0536US6819242B2Apparatus for use with capacitive presence detection systemsINVISA INC·Filed 2001·Granted Nov 16, 2004·1 cites·8 claims
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