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Inventor

DEFANT JOHN C

US6 patents
⚠️ This page may combine multiple inventors who share the name “DEFANT JOHN C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PRO TECH MONITORING INC

3 patents
US7205890B2Apr 17, 2007

System, method and apparatus for locating and controlling objects

PRO TECH MONITORING INC37 citations89
US7119695B2Oct 10, 2006

Advanced house arrest tracker system

PRO TECH MONITORING INC36 citations88
US6774799B2Aug 10, 2004

House arrest tracker system

PRO TECH MONITORING INC49 citations88

3M INNOVATIVE PROPERTIES CO

1 patent
US8981925B2Mar 17, 2015

System, method, and apparatus for detecting wireless devices

3M INNOVATIVE PROPERTIES CO36 citations89

3M ELECTRONIC MONITORING LTD

1 patent
US10966633B2Apr 6, 2021

Wrist worn mobile alcohol and offender monitoring system

3M ELECTRONIC MONITORING LTD1 citations54

FIDELITY ENG GROUP

1 patent
US9882674B1Jan 30, 2018

System, method, and apparatus for detecting and jamming wireless devices

FIDELITY ENG GROUP1 citations44