National Acquisition Sub, Inc.
5Patents
5Active
5Granted
46Portfolio score
Filing activity: Mar 5, 2008 → Oct 7, 2010 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8452019B1 | Testing and calibration for audio processing system with noise cancelation based on selected nulls | Electricity | 15 | Active |
| US8515093B2 | Input signal mismatch compensation system | Electricity | 9 | Active |
| US8781147B1 | Acoustic headphone having a single interface to receive audio signals and configuration data | Electricity | 8 | Active |
| US8482339B1 | Method and apparatus for temperature compensation of filter circuits | Electricity | 7 | Active |
| US8059849B2 | Small-footprint microphone module with signal processing functionality | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.