AUDIO PRECISION, INC.
23Patents
9Active
23Granted
39Portfolio score
Filing activity: Apr 12, 1985 → Feb 5, 2019 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5136267A | Tunable bandpass filter system and filtering method | Electricity | 138 | Expired |
| US5475315A | Method and apparatus for fast response and distortion measurement | Physics | 47 | Expired |
| US5420516A | Method and apparatus for fast response and distortion measurement | Physics | 43 | Expired |
| US5818240A | Method and system for measuring signal transfer characteristics in the presence of WOW, flutter and intermodulation distortion | Physics | 32 | Expired |
| US5748001A | Method and apparatus for fast response and distortion measurement | Physics | 30 | Expired |
| US5649304A | Method and apparatus for communicating auxiliary information in a measurement signal | Physics | 21 | Expired |
| US4631522A | Method and circuit for compensation of a multiplying digital-to-analog converter | Electricity | 15 | Expired |
| US5749047A | Method and apparatus for recognizing a test signal and determining signal transfer characteristics therefrom | Physics | 14 | Expired |
| US5265201A | Master-slave processor human interface system | Physics | 12 | Expired |
| US5089981A | Hybrid form digital filter | Electricity | 11 | Expired |
| US5247458A | Method and apparatus for testing a digital system for the occurrence of errors | Physics | 8 | Expired |
| USD846547S1 | Cage for shielding interference | General | 5 | Active |
| US4563652A | Dual-stage filter with feedback | Electricity | 4 | Expired |
| US4614914A | Low-distortion transformer-coupled circuit | Electricity | 4 | Expired |
| US7268711B1 | Method and circuit for amplitude compensation in a digital-to-analog converter | Electricity | 3 | Expired |
| US7558349B2 | Method and apparatus for measuring characteristics of a multi-channel system in the presence of crosstalk | Electricity | 2 | Active |
| USD884515S1 | Electric-acoustic testing device | General | 1 | Active |
| USD884516S1 | Audio analyzer | General | 1 | Active |
| USD920816S1 | Audio analyzer | General | 1 | Active |
| US10383266B2 | Wireless signal isolation assembly | Electricity | 0 | Active |
| USD892082S1 | Audio switcher | General | 0 | Active |
| US10687160B2 | Wireless audio analysis, test, and measurement | Electricity | 0 | Active |
| USD884517S1 | Audio analyzer | General | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.