Polk Audio, LLC
34Patents
25Active
34Granted
49Portfolio score
Filing activity: Jan 12, 1981 → Apr 8, 2024 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8194874B2 | In-room acoustic magnitude response smoothing via summation of correction signals | Electricity | 312 | Active |
| US4569074A | Method and apparatus for reproducing sound having a realistic ambient field and acoustic image | Electricity | 66 | Expired |
| US4489432A | Method and apparatus for reproducing sound having a realistic ambient field and acoustic image | Electricity | 58 | Expired |
| US4497064A | Method and apparatus for reproducing sound having an expanded acoustic image | Electricity | 57 | Expired |
| US4638505A | Optimized low frequency response of loudspeaker systems having main and sub-speakers | Electricity | 26 | Expired |
| USD738853S1 | Sound bar | General | 22 | Active |
| USD718739S1 | Square speaker | General | 21 | Active |
| USD798838S1 | USB audio speaker | General | 20 | Active |
| USD718738S1 | Speaker | General | 19 | Active |
| USD758346S1 | Audio speaker | General | 17 | Active |
| USD617775S1 | Speaker | General | 15 | Expired |
| USD718740S1 | Floor subwoofer | General | 15 | Active |
| US9131311B2 | Canal phones with structure and method for selectively passing or blocking environmental ambient sound and switchable electrical connections | Electricity | 9 | Active |
| US4413162A | Moving coil transducers using multiple-stranded coils | Electricity | 8 | Expired |
| US4350847A | Subwoofer system using a passive radiator | Electricity | 7 | Expired |
| US8634586B2 | Ceiling-mounted loudspeaker enclosure | Electricity | 5 | Active |
| US7817812B2 | Compact audio reproduction system with large perceived acoustic size and image | Electricity | 5 | Active |
| USD637994S1 | Audio system | General | 5 | Expired |
| USD868736S1 | Audio speaker system | General | 4 | Active |
| US10327064B2 | Method and system for implementing stereo dimensional array signal processing in a compact single enclosure active loudspeaker product | Electricity | 2 | Active |
| US11611830B2 | Audio transducer with forced ventilation of motor and method | Electricity | 2 | Active |
| US11937066B2 | Active cancellation of a height-channel soundbar array's forward sound radiation | Electricity | 1 | Active |
| US12256208B2 | Loudspeaker transducers | Electricity | 0 | Active |
| US12348949B2 | Active cancellation of a height-channel soundbar array's forward sound radiation | Electricity | 0 | Active |
| US11974111B2 | Loudspeaker cone with raised curved protrusions and method for controlling resonant modes | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.