Inventor
HERMAN FRED W
US7 patents
Patents
7 patentsUS5406262AApr 11, 1995
Adjusting magnetic bias field intensity in EAS presence detection system to enhance detection
SECURITY TAG SYSTEMS INC44 citations91
US5347262ASep 13, 1994
Theft-deterrent device providing force-sensitive tamper detection
SECURITY TAG SYSTEMS INC76 citations91
US5065137ANov 12, 1991
Magnetically-coupled, two-resonant-circuit, frequency-division tag
SECURITY TAG SYSTEMS INC48 citations91
US4670740AJun 2, 1987
Portable, batteryless, frequency divider consisting of inductor and diode
SECURITY TAG SYSTEMS INC31 citations91
US5241298AAug 31, 1993
Electrically-and-magnetically-coupled, batteryless, portable, frequency divider
SECURITY TAG SYSTEMS INC24 citations90
US4692746ASep 8, 1987
Recording-tape-reel assembly with electronic tag
SECURITY TAG SYSTEMS INC27 citations87
US5065138ANov 12, 1991
Magnetically-coupled two-resonant-circuit, frequency divider for presence-detection-system tag
SECURITY TAG SYSTEMS INC21 citations80