Rockford Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H03F AMPLIFIERS 578
 
  
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 3104
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9438181 Amplification of signals output from bridge-tied load audio amplifiersJul 21, 15Sep 06, 16[H03F]
9025809 Voicecoil affixationJan 03, 14May 05, 15[H04R]
9008348 Low profile loudspeakerJan 03, 14Apr 14, 15[H04R]
8712066 Audio signal clip detectionMar 14, 13Apr 29, 14[H04R]
8212620 Boosted-rail amplifierJul 16, 10Jul 03, 12[H03F]
7994857 Dynamic constant power amplifierDec 23, 09Aug 09, 11[H03F]
7778718 Frequency normalization of audio signalsMay 24, 05Aug 17, 10[G06F]
RE40550 Method and device for improved class BD amplification having single-terminal alternating-rail dual-sampling topologyJul 10, 02Oct 28, 08[H03F]
7239206 Ultracapacitor audio amplifierApr 22, 05Jul 03, 07[H03F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0316,627 DYNAMIC CONSTANT POWER AMPLIFIERAbandonedJul 18, 11Dec 29, 11[H03F]
2010/0324,711 FREQUENCY NORMALIZATION OF AUDIO SIGNALSAbandonedAug 09, 10Dec 23, 10[G06F, H03G]
2010/0303,276 LOUDSPEAKER SURROUND MOUNTAbandonedMay 29, 09Dec 02, 10[H04R]
2010/0188,136 DYNAMIC THERMAL MANAGEMENT SYSTEM AND METHODAbandonedJan 27, 09Jul 29, 10[H03K]
6768805 Method and article of manufacture to align and reinforce a driver's installation irrespective of driver diameterExpiredJun 10, 03Jul 27, 04[H04R]
4905291 Cyberoptic audio level control systemExpiredDec 29, 88Feb 27, 90[H03G]
4324950 Amplifier for driving electrostatic loudspeakersExpiredJun 25, 79Apr 13, 82[H03F, H03G]

Top Inventors for This Owner

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