Assignee
ESSEX ELECTRONICS INC
US17 patents
Top patents by PatentIndex Score
US5231326AJul 27, 1993
Piezoelectric electronic switch
ESSEX ELECTRONICS INC118 citations95
US5674018AOct 7, 1997
Weatherproof electronic keypad with replaceable graphics overlay
ESSEX ELECTRONICS INC44 citations88
USD724588SMar 17, 2015
Smart card RFID reader
ESSEX ELECTRONICS INC15 citations79
USD459671SJul 2, 2002
Keypad
ESSEX ELECTRONICS INC6 citations70
US11995936B2May 28, 2024
Method and apparatus for operating a RFID system
ESSEX ELECTRONICS INC2 citations68
US11594089B2Feb 28, 2023
Touchless motion sensor systems for performing directional detection and for providing access control
ESSEX ELECTRONICS INC3 citations68
US11328546B2May 10, 2022
Method and apparatus for operating a RFID system
ESSEX ELECTRONICS INC4 citations68
US10020571B2Jul 10, 2018
Antenna mounting system for metallic structures
ESSEX ELECTRONICS INC2 citations68
USD639194SJun 7, 2011
Proximity sensor
ESSEX ELECTRONICS INC5 citations60
USD639195SJun 7, 2011
Proximity sensor
ESSEX ELECTRONICS INC4 citations60
USD634662SMar 22, 2011
Proximity sensor
ESSEX ELECTRONICS INC3 citations60
USD634661SMar 22, 2011
Proximity sensor
ESSEX ELECTRONICS INC3 citations60
USD491087SJun 8, 2004
Keypad
ESSEX ELECTRONICS INC2 citations59
US12518583B2Jan 6, 2026
Method and apparatus for operating a RFID system
ESSEX ELECTRONICS INC0 citations57
USD738882SSep 15, 2015
Touchless microwave switch
ESSEX ELECTRONICS INC2 citations57
US7063471B2Jun 20, 2006
Access control apparatus
ESSEX ELECTRONICS INC0 citations49
US9140757B2Sep 22, 2015
Testing a circuit assembly that contains a piezoelectric switch
ESSEX ELECTRONICS INC1 citations40