White's Electronics, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01V GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS 1664
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 5201
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 3156
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 292
 
  
 
A61B DIAGNOSIS; SURGERY; IDENTIFICATION 1239

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9285496 Truncated half-sine methods for metal detectorsOct 22, 13Mar 15, 16[G01V]
9207315 Metal detector with motion sensingJun 27, 11Dec 08, 15[G08B, G01S, G01V]
8878515 Constant current metal detectorSep 19, 11Nov 04, 14[G01N]
8749240 Time domain method and apparatus for metal detectorsSep 19, 11Jun 10, 14[G01V]
8729902 Metal detector analysis and display methodsOct 05, 10May 20, 14[G01V]
8629677 Hybrid induction balance/pulse induction metal detectorJun 22, 11Jan 14, 14[G01V]
7994789 Dual field search coil for pulse induction metal detectorsFeb 11, 09Aug 09, 11[G01N, G01V]
7649356 Pulse induction metal detector having high energy efficiency and sensitivityDec 18, 02Jan 19, 10[G01R, G01V]
7391217 Metal detection methods and apparatus wherein a numeric representation of the sense signal and a noise contribution to the sense signal are producedAug 29, 06Jun 24, 08[G01V]
7148692 Detector for non-ferrous metals with reduced false positive responsesOct 20, 04Dec 12, 06[G01V]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6421621 Metal detector target identification using flash phase analysisExpiredApr 14, 00Jul 16, 02[G01V]
6172504 Metal detector target identification using flash phase analysisExpiredJun 29, 98Jan 09, 01[G01V]
4906973 Walk-through metal detectorExpiredApr 29, 88Mar 06, 90[G08B]
4868910 Metal detector with microprocessor control and analysisExpiredFeb 16, 88Sep 19, 89[G01N, G01V]
4862316 Static charge dissipating housing for metal detector search loop assemblyExpiredFeb 29, 88Aug 29, 89[H05F]
4783630 Metal detector with circuits for automatically screening out the effects of offset and mineralized groundExpiredMar 27, 86Nov 08, 88[G01R, G01V]
4293816 Balanced search loop for metal detectorExpiredJul 09, 79Oct 06, 81[G01V]
4249128 Wide pulse gated metal detector with improved noise rejectionExpiredFeb 06, 78Feb 03, 81[G01V]

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