LEXICON

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 2105
 
  
 
H03G CONTROL OF AMPLIFICATION 151
 
  
 
H04S STEREOPHONIC SYSTEMS 130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6697491 5-2-5 matrix encoder and decoder systemSep 03, 98Feb 24, 04[H04R]
6683962 Method and system for driving speakers with a 90 degree phase shiftDec 21, 98Jan 27, 04[H03G]
5870480 Multichannel active matrix encoder and decoder with maximum lateral separationNov 01, 96Feb 09, 99[H04R]
5796844 Multichannel active matrix sound reproduction with maximum lateral separationJul 19, 96Aug 18, 98[H04S]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4366873 Electronic scale for use in a weight control programExpiredMay 01, 80Jan 04, 83[G01G]
4346453 Item display order picking systemExpiredNov 26, 79Aug 24, 82[G06F]
4241350 Radar target pattern recognition system using logarithmic analysisExpiredDec 10, 71Dec 23, 80[G01S]

Top Inventors for This Owner

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