Robert C. Youngquist
26Patents
13h-index
29Co-inventors
81Inventor score
Filing activity: Feb 17, 1984 → Sep 19, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4697926A | Coherent distributed sensor and method using short coherence length sources | Physics | 68 | Expired |
| US4699513A | Distributed sensor and method using coherence multiplexing of fiber-optic interferometric sensors | Electricity | 58 | Expired |
| US4778237A | Single-mode fiber optic saturable absorber | Physics | 48 | Expired |
| US5747805A | Fully integrating resistive array electronic multiplexor | Electricity | 30 | Expired |
| US4768851A | Fiber optic modal coupler, interferometer and method of coupling spatial modes using same | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5861755A | Two-phase quality/flow meter | Physics | 24 | Expired |
| US4818064A | Sensor array and method of selective interferometric sensing by use of coherence synthesis | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5710377A | Ultrasonic leak detection system | Physics | 18 | Expired |
| US5561290A | Optical detector calibrator system | Physics | 18 | Expired |
| US4792207A | Single mode fiber optic single sideband modulator and method of frequency shifting using same | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6891148B1 | Scaling device for photographic images | Physics | 17 | Expired |
| US4801189A | Birefringent fiber narrowband polarization coupler and method of coupling using same | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4735485A | Acousto-optic frequency shifter using optical fiber and method of manufacturing same | Physics | 16 | Expired |
| US5979239A | Ultrasonic imaging system | Physics | 8 | Expired |
| US5627362A | Portable light source unit for simulating fires having an adjustable aperture | Physics | 7 | Expired |
| US5412221A | Particle fallout/activity sensor | Physics | 7 | Expired |
| US6651481B1 | Method and apparatus for characterizing pressure sensors using modulated light beam pressure | Physics | 6 | Expired |
| US10273024B1 | Radiation reflector and emitter | Performing Operations; Transporting | 6 | Active |
| US8947074B1 | Inductive position sensor | Physics | 4 | Active |
| US9477857B2 | Surface acoustic wave tag-based coherence multiplexing | Electricity | 4 | Active |
| US6650125B1 | Leak and pipe detection method and system | Physics | 4 | Expired |
| US9170086B1 | Inductive position sensor | Physics | 2 | Active |
| US8577639B2 | Method and apparatus for accurately calibrating a spectrometer | Physics | 1 | Active |
| US10815129B1 | Method of fabricating rigid radiation reflectors | Performing Operations; Transporting | 0 | Active |
| US9151639B2 | Two-dimensional inductive position sensing system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.