David L. Richardson
20Patents
15h-index
27Co-inventors
81Inventor score
Filing activity: Nov 18, 1974 → May 2, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6313620A | Detector system for identifying the frequency of a received signal useful in a channelized receiver | Physics | 173 | Expired |
| US4454543A | Dynamic video scrambling | Electricity | 107 | Expired |
| US4529534A | Peroxyacid bleach compositions | Chemistry; Metallurgy | 94 | Expired |
| US4115292A | Enzyme-containing detergent articles | Chemistry; Metallurgy | 84 | Expired |
| US4268738A | Microwave energy moderator | Emerging Cross-Sectional Technologies | 66 | Expired |
| US6882274B2 | Energy conserving satellite tracking tag | Physics | 55 | Expired |
| US5828333A | Multiple access diplex doppler radar | Physics | 45 | Expired |
| US5861837A | Poly-frequency CW doppler radar system with leakage cancellation and method | Physics | 38 | Expired |
| US6329944A | Tag communication protocol & system | Physics | 35 | Expired |
| US6246729A | Method and apparatus for decoding a phase encoded data signal | Electricity | 34 | Expired |
| US6297734A | Randomization of transmit time | Physics | 31 | Expired |
| US4102823A | Low and non-phosphate detergent compositions | Chemistry; Metallurgy | 29 | Expired |
| US5714947A | Vehicle collision avoidance system | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6052421A | Method for separating a desired signal from an interfering signal | Physics | 17 | Expired |
| US5922007A | Endoscopic surgical instrument with ratchet locking device | Human Necessities | 15 | Expired |
| US6791489B1 | Radio tag for LFM radar | Physics | 10 | Expired |
| US5188173A | Pressure control system and cable guiding device for use in drilling wells | Fixed Constructions | 10 | Expired |
| USD320416S | Gameboard | General | 3 | Expired |
| US5574360A | Simultaneous signal detector | Physics | 3 | Expired |
| US5530451A | Repeater with low spurious time outputs | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.