Assignee
POLK AUDIO INC
US·11 granted patents·1 pending application·368 citations·filing 1981–2014
Top patents by PatentIndex Score
12 records- 0195US4569074AMethod and apparatus for reproducing sound having a realistic ambient field and acoustic imagePOLK AUDIO INC·Filed 1984·Granted Feb 4, 1986·96 cites·8 claims
- 0293US4497064AMethod and apparatus for reproducing sound having an expanded acoustic imagePOLK AUDIO INC·Filed 1982·Granted Jan 29, 1985·75 cites·23 claims
- 0393US4489432AMethod and apparatus for reproducing sound having a realistic ambient field and acoustic imagePOLK AUDIO INC·Filed 1982·Granted Dec 18, 1984·77 cites·14 claims
- 0480US9226060B2Personalized modular headphone system and methodPOLK AUDIO INC·Filed 2013·Granted Dec 29, 2015·11 cites·6 claims
- 0579US7817812B2Compact audio reproduction system with large perceived acoustic size and imagePOLK AUDIO INC·Filed 2005·Granted Oct 19, 2010·9 cites·20 claims
- 0678US9226091B2Acoustic surround immersion control system and methodPOLK AUDIO INC·Filed 2013·Granted Dec 29, 2015·6 cites·10 claims
- 0764USD617775SSpeakerPOLK AUDIO INC·Filed 2007·Granted Jun 15, 2010·18 cites·1 claims
- 0864US4638505AOptimized low frequency response of loudspeaker systems having main and sub-speakersPOLK AUDIO INC·Filed 1985·Granted Jan 20, 1987·38 cites·5 claims
- 0952US4413162AMoving coil transducers using multiple-stranded coilsPOLK AUDIO INC·Filed 1982·Granted Nov 1, 1983·17 cites·2 claims
- 1051US4350847ASubwoofer system using a passive radiatorPOLK AUDIO INC·Filed 1981·Granted Sep 21, 1982·16 cites·5 claims
- 1140USD637994SAudio systemPOLK AUDIO INC·Filed 2007·Granted May 17, 2011·5 cites·1 claims
- 1238US2014233754A1Headphone system with retractable microphonePOLK AUDIO INC·Filed 2014·Application pending·0 cites
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