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David Wesley Langford
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Madison, AL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Collision warning system
Patent number
9,865,147
Issue date
Jan 9, 2018
David Langford
G08 - SIGNALLING
Information
Patent Grant
Culture systems, apparatus, and related methods and articles
Patent number
9,550,970
Issue date
Jan 24, 2017
INQ BIOSCIENCES CORPORATION
Aaron Hammons
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Near field electromagnetic location system and method
Patent number
8,643,538
Issue date
Feb 4, 2014
Q-Track Corporation
Hans Gregory Schantz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Near field electromagnetic calibration system
Patent number
7,859,452
Issue date
Dec 28, 2010
Q-Track Corporation
Hans Gregory Schantz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Near field electromagnetic positioning calibration system and method
Patent number
7,592,949
Issue date
Sep 22, 2009
Q-Track Corporation
Hans Gregory Schantz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electromagnetic location and display system and method
Patent number
7,538,715
Issue date
May 26, 2009
Q-Track Corporation
David Wesley Langford
G01 - MEASURING TESTING
Information
Patent Grant
Near field electromagnetic positioning system and method
Patent number
7,298,314
Issue date
Nov 20, 2007
Q-Track Corporation
Hans Gregory Schantz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for impulse radio transceiver calibration
Patent number
7,230,980
Issue date
Jun 12, 2007
Time Domain Corporation
David W. Langford
G01 - MEASURING TESTING
Information
Patent Grant
Impulse radio receiver and method for finding angular offset of an...
Patent number
6,760,387
Issue date
Jul 6, 2004
Time Domain Corp.
David W. Langford
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Collision Warning System
Publication number
20170243458
Publication date
Aug 24, 2017
David Langford
G08 - SIGNALLING
Information
Patent Application
CULTURE SYSTEMS, APPARATUS, AND RELATED METHODS AND ARTICLES
Publication number
20110207209
Publication date
Aug 25, 2011
Aaron Hammons
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
Near Field Electromagnetic Location System and Method
Publication number
20110148714
Publication date
Jun 23, 2011
Q-Track Corporation
Hans Gregory Schantz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Near Field Electromagnetic Calibration System
Publication number
20100103025
Publication date
Apr 29, 2010
Q-Track Corporation
Hans Gregory Schantz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Near field electromagnetic positioning calibration system and method
Publication number
20080165050
Publication date
Jul 10, 2008
Q-Track Corporation
Hans Gregory Schantz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Electromagnetic location and display system and method
Publication number
20060267833
Publication date
Nov 30, 2006
Q-Track, Inc.
David Wesley Langford
G01 - MEASURING TESTING
Information
Patent Application
Near field electromagnetic positioning system and method
Publication number
20050046608
Publication date
Mar 3, 2005
Q-Track, Inc.
Hans Gregory Schantz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and apparatus for impulse radio transceiver calibration
Publication number
20030076879
Publication date
Apr 24, 2003
David W. Langford
G01 - MEASURING TESTING
Information
Patent Application
Impulse radio receiver and method for finding angular offset of an...
Publication number
20030058971
Publication date
Mar 27, 2003
David W. Langford
G01 - MEASURING TESTING