Eldon M. Sutphin
29Patents
12h-index
25Co-inventors
81Inventor score
Filing activity: Apr 30, 1975 → Sep 13, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4204171A | Filter which tracks changing frequency of input signal | Electricity | 104 | Expired |
| US6922059B2 | Electric field sensor | Physics | 60 | Expired |
| US7154275B2 | Method and apparatus for detecting individuals using electrical field sensors | Physics | 33 | Expired |
| US6633254B1 | Self-modulating remote moving target detector | Physics | 26 | Expired |
| US7460052B2 | Multiple frequency through-the-wall motion detection and ranging using a difference-based estimation technique | Physics | 25 | Expired |
| US3978416A | Filter which tracks changing frequency of input signal | Electricity | 25 | Expired |
| US8373543B2 | RFID transponder using ambient radiation | Electricity | 24 | Active |
| US7397351B1 | Use of E-field sensors for situation awareness/collision avoidance | Physics | 22 | Expired |
| US4231863A | Method and apparatus for treating water | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6900642B2 | Aircraft electrostatic discharge test system | Physics | 20 | Expired |
| US9696405B1 | Acoustic hostile fire indicator | Electricity | 14 | Active |
| US4635058A | Vehicle identification system using radar and acoustic information | Physics | 13 | Expired |
| US4231867A | Method and apparatus for treating heterogeneous fluid systems | Emerging Cross-Sectional Technologies | 11 | Expired |
| US3978719A | Tachometer without physical connection to internal combustion engine | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4062232A | Testing compression in engines from starter motor current waveform | Physics | 9 | Expired |
| US6980106B2 | Remote sensor with voice locator message | Physics | 8 | Expired |
| US7355545B2 | Through the wall ranging with triangulation using multiple spaced apart radars | Physics | 8 | Expired |
| US3995224A | Fast automatic gain control circuit with adjustable range | Electricity | 7 | Expired |
| US8044839B2 | Combined radar and communications link | Physics | 5 | Active |
| US7460053B2 | Method and apparatus for through-the-wall motion detection using CW radar | Physics | 4 | Expired |
| US4790012A | Encryption-decryption system | Electricity | 4 | Expired |
| US7633426B2 | Combined radar and communications link | Physics | 4 | Active |
| US4518936A | Commutating filter passing only the fundamental frequency and odd harmonics thereof | Electricity | 3 | Expired |
| US4386275A | Apparatus and method for detecting the presence of a heat-emitting body | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4163192A | Ignition spark zone duration circuit | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.