David Marsh
9Patents
6h-index
9Co-inventors
56Inventor score
Filing activity: Apr 10, 1975 → Jan 21, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5747701A | Ultrasonic vortex flowmeter having remote signal processing | Physics | 51 | Expired |
| USD335096S | Bluff body flowmeter | General | 18 | Expired |
| US4735094A | Dual bluff body vortex flowmeter | Physics | 11 | Expired |
| US4003284A | Electronic musical instrument | Physics | 11 | Expired |
| US4457181A | Narrow profile vortex shedding body | Physics | 7 | Expired |
| US5728947A | Ultrasonic vortex flowmeter having clamp-on housing | Physics | 6 | Expired |
| US5440819A | Actuator and programmable amplifier for an expanding plug gage head | Physics | 3 | Expired |
| US8513956B2 | Calibration of conductivity measurement system | Physics | 1 | Active |
| US11480526B2 | Instrument for sequential analysis for silica and phosphate in aqueous solution | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.