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Charles E. Heger
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Saratoga, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Power cable magnetic field sensor
Patent number
7,714,567
Issue date
May 11, 2010
Heger Research LLC
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Ratiometric AC wire tracer
Patent number
7,671,576
Issue date
Mar 2, 2010
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Wireless swimming pool water level system
Patent number
7,318,344
Issue date
Jan 15, 2008
Heger Research LLC
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Modular laser layout system
Patent number
7,181,853
Issue date
Feb 27, 2007
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Sensor auto-recalibration
Patent number
6,989,662
Issue date
Jan 24, 2006
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus and method for capacitive level sensor
Patent number
6,922,063
Issue date
Jul 26, 2005
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Wireless swimming pool water level system
Patent number
6,568,264
Issue date
May 27, 2003
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic wall-stud sensor display
Patent number
6,198,271
Issue date
Mar 6, 2001
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Enhanced impulse radar system
Patent number
6,100,839
Issue date
Aug 8, 2000
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Stud sensor with dual sensitivity
Patent number
6,023,159
Issue date
Feb 8, 2000
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic level displaying inclination having digital and analog d...
Patent number
5,956,260
Issue date
Sep 21, 1999
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic wall-stud sensor with three capacitive elements
Patent number
5,917,314
Issue date
Jun 29, 1999
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Dual transmitter visual display system
Patent number
5,905,455
Issue date
May 18, 1999
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Imaging radar suitable for material penetration
Patent number
5,900,833
Issue date
May 4, 1999
Zircon Corporation
William M. Sunlin
G01 - MEASURING TESTING
Information
Patent Grant
Swept range gate radar system for detection of nearby objects
Patent number
5,896,102
Issue date
Apr 20, 1999
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Ultra-wideband swept range gate radar system with variable transmit...
Patent number
5,854,603
Issue date
Dec 29, 1998
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Ultra wide-band radar antenna for concrete penetration
Patent number
5,640,168
Issue date
Jun 17, 1997
Zircon Corporation
Charles E. Heger
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Stud sensor with over-stud miscalibration via circuit which stores...
Patent number
5,619,128
Issue date
Apr 8, 1997
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic level displaying inclination with regard to instrument l...
Patent number
5,592,745
Issue date
Jan 14, 1997
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic fence post level
Patent number
5,594,669
Issue date
Jan 14, 1997
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Swept range gate radar system for detection of nearby objects
Patent number
5,543,799
Issue date
Aug 6, 1996
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Swept range gate short range radar system
Patent number
5,541,605
Issue date
Jul 30, 1996
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic level with stereo sound indication
Patent number
5,488,779
Issue date
Feb 6, 1996
Zircon Corporation
Gary R. Schultheis
G01 - MEASURING TESTING
Information
Patent Grant
Electronic level displaying inclination using a multi-segment fan-l...
Patent number
5,479,715
Issue date
Jan 2, 1996
Zircon Corporation
Gary R. Schultheis
G01 - MEASURING TESTING
Information
Patent Grant
Stud sensor with digital averager and dual sensitivity
Patent number
5,352,974
Issue date
Oct 4, 1994
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic level with display scale and audible tone scale
Patent number
5,313,713
Issue date
May 24, 1994
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic capacitive level with display showing direction of rotat...
Patent number
5,259,118
Issue date
Nov 9, 1993
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Grant
Electronic capacitance level with automatic electrode selection
Patent number
5,083,383
Issue date
Jan 28, 1992
Zircon International, Inc.
Charles E. Heger
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Power cable magnetic field sensor
Publication number
20090315555
Publication date
Dec 24, 2009
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Application
RATIOMETRIC AC WIRE TRACER
Publication number
20090224747
Publication date
Sep 10, 2009
ZIRCON CORPORATION
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Application
Gradiometric Directional Metal Detector
Publication number
20080297158
Publication date
Dec 4, 2008
ZIRCON CORPORATION
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Application
SENSOR AUTO-RECALIBRATION
Publication number
20050242800
Publication date
Nov 3, 2005
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Application
Dual axis capacitive level sensor
Publication number
20050007125
Publication date
Jan 13, 2005
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Application
Modular laser layout system
Publication number
20050005462
Publication date
Jan 13, 2005
Zircon Corporation
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Application
Wireless swimming pool water level system
Publication number
20040118203
Publication date
Jun 24, 2004
Charles E. Heger
G05 - CONTROLLING REGULATING
Information
Patent Application
Wireless swimming pool water level system
Publication number
20020116999
Publication date
Aug 29, 2002
Charles E. Heger
G01 - MEASURING TESTING
Information
Patent Application
Method for locating energized electric conductor
Publication number
20010010460
Publication date
Aug 2, 2001
Lawrence F. Miller
G01 - MEASURING TESTING