Inventor
HILLIARD STEVEN R
US14 patents
⚠️ This page may combine multiple inventors who share the name “HILLIARD STEVEN R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
INDUCTIVE SIGNATURE TECH INC
13 patentsUS6342845B1Jan 29, 2002
Automotive vehicle classification and identification by inductive signature
INDUCTIVE SIGNATURE TECH INC80 citations96
US6999886B2Feb 14, 2006
Vehicle speed estimation using inductive vehicle detection systems
INDUCTIVE SIGNATURE TECH INC38 citations92
US6838886B2Jan 4, 2005
Method and apparatus for measuring inductance
INDUCTIVE SIGNATURE TECH INC29 citations91
US6611210B2Aug 26, 2003
Automotive vehicle classification and identification by inductive signature
INDUCTIVE SIGNATURE TECH INC19 citations91
US6590400B2Jul 8, 2003
Inductive signature measurement circuit
INDUCTIVE SIGNATURE TECH INC19 citations91
US6380868B1Apr 30, 2002
Permeability-modulated carrier referencing
INDUCTIVE SIGNATURE TECH INC22 citations91
US6337602B2Jan 8, 2002
Method and apparatus for active isolation in inductive loop detectors
INDUCTIVE SIGNATURE TECH INC18 citations91
US6876949B2Apr 5, 2005
Normalization of inductive vehicle detector outputs
INDUCTIVE SIGNATURE TECH INC40 citations90
US6917308B2Jul 12, 2005
Surface-mount traffic sensors
INDUCTIVE SIGNATURE TECH INC17 citations83
US6911829B2Jun 28, 2005
Inductive signature measurement circuit
INDUCTIVE SIGNATURE TECH INC8 citations72
US6771064B2Aug 3, 2004
Inductive sensor apparatus and method for deploying
INDUCTIVE SIGNATURE TECH INC11 citations66
US6639521B2Oct 28, 2003
Inductive sensor and method of use
INDUCTIVE SIGNATURE TECH INC3 citations61
US6988052B2Jan 17, 2006
Normalization of inductive vehicle detector outputs
INDUCTIVE SIGNATURE TECH INC3 citations60