Spectral Dynamics, Inc.
4Patents
1Active
4Granted
32Portfolio score
Filing activity: Jul 20, 1977 → Jul 30, 2007 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4135244A | Method and apparatus for programming and reducing runout in rotating shaft vibration signal detection | Physics | 26 | Expired |
| US4134303A | Method and circuit for providing electrical runout reduction in rotating shaft vibration detection systems | Physics | 20 | Expired |
| US7546198B2 | Dynamic noise-reduction baselining for real-time spectral analysis of internal combustion engine knock | Physics | 18 | Active |
| US7181339B2 | Real-time spectral analysis of internal combustion engine knock | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.