Assignee
ROCKFORD CORP
US·27 granted patents·8 pending applications·549 citations·filing 1988–2025
Top patents by PatentIndex Score
35 records- 0196US5339362AAutomotive audio systemROCKFORD CORP·Filed 1992·Granted Aug 16, 1994·154 cites·10 claims
- 0292US5546273AAutomotive audio systemROCKFORD CORP·Filed 1994·Granted Aug 13, 1996·87 cites·4 claims
- 0390US7778718B2Frequency normalization of audio signalsROCKFORD CORP·Filed 2005·Granted Aug 17, 2010·58 cites·20 claims
- 0488USD315832SHeat sinkROCKFORD CORP·Filed 1988·Granted Apr 2, 1991·53 cites·1 claims
- 0587US11987314B2Removable bass speaker enclosure for motorcycle saddlebagsROCKFORD CORP·Filed 2021·Granted May 21, 2024·2 cites·22 claims
- 0682US6097249AMethod and device for improved class BD amplification having single-terminal alternating-rail dual-sampling topologyROCKFORD CORP·Filed 1998·Granted Aug 1, 2000·49 cites·27 claims
- 0778US7994857B2Dynamic constant power amplifierROCKFORD CORP·Filed 2009·Granted Aug 9, 2011·9 cites·41 claims
- 0875US12233979B2Removable bass speaker enclosure for motorcycle saddlebagsROCKFORD CORP·Filed 2024·Granted Feb 25, 2025·0 cites·20 claims
- 0970US2025162676A1Removable bass speaker enclosure for motorcycle saddlebagsROCKFORD CORP·Filed 2025·Application pending·0 cites
- 1069US6577741B1Method and article of manufacture to align and reinforce a driver's installation irrespective of driver diameterROCKFORD CORP·Filed 2001·Granted Jun 10, 2003·14 cites·5 claims
- 1168US2026025608A1Motorcycle saddlebag cut in kitROCKFORD CORP·Filed 2025·Application pending·0 cites
- 1266USD1025956SSpeaker screenROCKFORD CORP·Filed 2021·Granted May 7, 2024·4 cites·1 claims
- 1365US7239206B2Ultracapacitor audio amplifierROCKFORD CORP·Filed 2005·Granted Jul 3, 2007·7 cites·16 claims
- 1464USD403666SHeat sinkROCKFORD CORP·Filed 1998·Granted Jan 5, 1999·16 cites·1 claims
- 1562US2025344007A1Angled surround attachmentROCKFORD CORP·Filed 2025·Application pending·0 cites
- 1660USD368253SHeat sinkROCKFORD CORP·Filed 1993·Granted Mar 26, 1996·15 cites·1 claims
- 1757USD931833SProtective grill for loudspeakerROCKFORD CORP·Filed 2019·Granted Sep 28, 2021·8 cites·1 claims
- 1854USD1047777SSpeaker enclosure for a motorcycle saddlebagROCKFORD CORP·Filed 2021·Granted Oct 22, 2024·2 cites·1 claims
- 1954US5751823AAudio amplifier system with improved isolation between preamplifier and power amplifierROCKFORD CORP·Filed 1996·Granted May 12, 1998·24 cites·7 claims
- 2053US2025330752A1Systems, methods, and devices for variable impedance audio equipmentROCKFORD CORP·Filed 2025·Application pending·0 cites
- 2153US2024244387A1Systems, methods, and devices for auditory enhancementROCKFORD CORP·Filed 2024·Application pending·0 cites
- 2249USD484494SAudio speaker coneROCKFORD CORP·Filed 2002·Granted Dec 30, 2003·12 cites·1 claims
- 2349US2010303276A1Loudspeaker surround mountROCKFORD CORP·Filed 2009·Application pending·0 cites
- 2446US5936467ADynamically invariant AB linear operation amplifierROCKFORD CORP·Filed 1997·Granted Aug 10, 1999·9 cites·29 claims
- 2545USD402989SSpeaker wave guideROCKFORD CORP·Filed 1997·Granted Dec 22, 1998·10 cites·1 claims
- 2644USD1014343SCombined speaker grill and saddlebag for a motorcycleROCKFORD CORP·Filed 2021·Granted Feb 13, 2024·1 cites·1 claims
- 2741US2010324711A1Frequency normalization of audio signalsROCKFORD CORP·Filed 2010·Application pending·0 cites
- 2838US6768805B1Method and article of manufacture to align and reinforce a driver's installation irrespective of driver diameterROCKFORD CORP·Filed 2003·Granted Jul 27, 2004·0 cites·2 claims
- 2938USD401225SHeat sinkROCKFORD CORP·Filed 1997·Granted Nov 17, 1998·5 cites·1 claims
- 3038US4905291ACyberoptic audio level control systemROCKFORD CORP·Filed 1988·Granted Feb 27, 1990·4 cites·32 claims
- 3136US2010188136A1Dynamic thermal management system and methodROCKFORD CORP·Filed 2009·Application pending·0 cites
- 3234US5673000ADynamically invariant AB linear operation amplifierROCKFORD CORP·Filed 1996·Granted Sep 30, 1997·3 cites·13 claims
- 3331USRE40550EMethod and device for improved class BD amplification having single-terminal alternating-rail dual-sampling topologyROCKFORD CORP·Filed 2002·Granted Oct 28, 2008·0 cites·33 claims
- 3430USD1080613SEntertainment centerROCKFORD CORP·Filed 2021·Granted Jun 24, 2025·0 cites·1 claims
- 3527USD881076SSpeaker grill for a motorcycle saddle bag lidROCKFORD CORP·Filed 2017·Granted Apr 14, 2020·3 cites·1 claims
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