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Inventor

David Wesley Langford

Inventor
Madison, AL, US

Overview

9→
Patents
2004–2018
Patent span
Physics
Primary field (CPC G)

Patents· 9 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G01Sprimary
G01SRadio direction-finding54%
H04BTransmission31%
C12MApparatus for enzymology or microbiology8%
G08BSignalling systems, e.g. personal calling systems8%
PatentTitleYear
9,865,147'Collision warning system'20189,550,970'Culture systems, apparatus, and related methods and articles'20178,643,538'Near field electromagnetic location system and method'20147,859,452'Near field electromagnetic calibration system'20107,592,949'Near field electromagnetic positioning calibration system and method'20097,538,715'Electromagnetic location and display system and method'20097,298,314'Near field electromagnetic positioning system and method'20077,230,980'Method and apparatus for impulse radio transceiver calibration'20076,760,387'Impulse radio receiver and method for finding angular offset of an impulse radio transmitter'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2007Patents assigned to TIME DOMAIN CORP (2)· patent assignee history
2004–2018Based in Madison, AL, US· patent location history
2007–2014Patents assigned to Q TRACK CORP (5)· patent assignee history
2014Patents assigned to DEPIERRE ROBERT EDWARD (1)· patent assignee history
2017–2018Patents assigned to MCGINTY JOSEPH (2)· patent assignee history
2017Patents assigned to FAES STEVEN M (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
Q TRACK CORP52007–2014
MCGINTY JOSEPH22017–2018
TIME DOMAIN CORP22004–2007
DEPIERRE ROBERT EDWARD12014
FAES STEVEN M12017
Locations
LocationPatentsSpan
Madison, AL, US92004–2018