Inventor
HEGER CHARLES E
US28 patents
⚠️ This page may combine multiple inventors who share the name “HEGER CHARLES E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZIRCON CORP
24 patentsUS5640168AJun 17, 1997
Ultra wide-band radar antenna for concrete penetration
ZIRCON CORP254 citations99
US6023159AFeb 8, 2000
Stud sensor with dual sensitivity
ZIRCON CORP89 citations98
US5619128AApr 8, 1997
Stud sensor with over-stud miscalibration via circuit which stores an initial calibration density, compares that to a current test density and outputs result via indicator
ZIRCON CORP101 citations98
US6198271B1Mar 6, 2001
Electronic wall-stud sensor display
ZIRCON CORP118 citations97
US5917314AJun 29, 1999
Electronic wall-stud sensor with three capacitive elements
ZIRCON CORP98 citations97
US5905455AMay 18, 1999
Dual transmitter visual display system
ZIRCON CORP80 citations96
US5900833AMay 4, 1999
Imaging radar suitable for material penetration
ZIRCON CORP141 citations96
US5854603ADec 29, 1998
Ultra-wideband swept range gate radar system with variable transmitter delay
ZIRCON CORP57 citations96
US5543799AAug 6, 1996
Swept range gate radar system for detection of nearby objects
ZIRCON CORP74 citations96
US5541605AJul 30, 1996
Swept range gate short range radar system
ZIRCON CORP55 citations96
US5352974AOct 4, 1994
Stud sensor with digital averager and dual sensitivity
ZIRCON CORP84 citations96
US5313713AMay 24, 1994
Electronic level with display scale and audible tone scale
ZIRCON CORP70 citations94
US6989662B2Jan 24, 2006
Sensor auto-recalibration
ZIRCON CORP38 citations92
US6922063B2Jul 26, 2005
Apparatus and method for capacitive level sensor
ZIRCON CORP37 citations92
US5956260ASep 21, 1999
Electronic level displaying inclination having digital and analog displays
ZIRCON CORP49 citations92
US5896102AApr 20, 1999
Swept range gate radar system for detection of nearby objects
ZIRCON CORP29 citations92
US5594669AJan 14, 1997
Electronic fence post level
ZIRCON CORP31 citations92
US5592745AJan 14, 1997
Electronic level displaying inclination with regard to instrument length
ZIRCON CORP26 citations91
US5488779AFeb 6, 1996
Electronic level with stereo sound indication
ZIRCON CORP42 citations91
US5479715AJan 2, 1996
Electronic level displaying inclination using a multi-segment fan-like display
ZIRCON CORP28 citations91
US6100839AAug 8, 2000
Enhanced impulse radar system
ZIRCON CORP36 citations90
US7181853B2Feb 27, 2007
Modular laser layout system
ZIRCON CORP18 citations82
US5259118ANov 9, 1993
Electronic capacitive level with display showing direction of rotation to achieve level/plumb
ZIRCON CORP16 citations74
US7671576B2Mar 2, 2010
Ratiometric AC wire tracer
ZIRCON CORP0 citations42