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INVISA INC
US5 patents
Top patents by PatentIndex Score
US7187282B2Mar 6, 2007
Digital capacitive sensing device for security and safety applications
INVISA INC24 citations86
US7167093B2Jan 23, 2007
Method of steering capacitor fields for use in capacitive sensing security systems
INVISA INC23 citations86
US7023222B2Apr 4, 2006
Apparatus and method for processing capacitor sensor signals using digital frequency shift measurement techniques with floating reference
INVISA INC2 citations56
US7193522B2Mar 20, 2007
Apparatus and circuit for use with capacitive presence detection systems
INVISA INC4 citations50
US6819242B2Nov 16, 2004
Apparatus for use with capacitive presence detection systems
INVISA INC1 citations49