David B. Stewart
35Patents
14h-index
29Co-inventors
81Inventor score
Filing activity: Oct 6, 1977 → Apr 6, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5359180A | Power supply system for arcjet thrusters | Electricity | 70 | Expired |
| US7323790B2 | Wave energy converters (WECs) with linear electric generators (LEGs) | Emerging Cross-Sectional Technologies | 65 | Expired |
| US7140180B2 | Wave energy converter (WEC) device and system | Emerging Cross-Sectional Technologies | 41 | Expired |
| US7141888B2 | Antirotational structures for wave energy converters | Emerging Cross-Sectional Technologies | 40 | Expired |
| US7305823B2 | Active impedance matching systems and methods for wave energy converter | Emerging Cross-Sectional Technologies | 35 | Expired |
| US7443046B2 | Wave energy converter utilizing internal reaction mass and spring | Emerging Cross-Sectional Technologies | 32 | Active |
| US7348764B2 | Coil switching of an electric generator | Electricity | 31 | Active |
| US7362003B2 | Coil switching circuit for linear electric generator | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4771003A | Heat stable alkaline proteases produced by a bacillus | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7168532B2 | Wave energy converter (WEC) with magnetic braking | Emerging Cross-Sectional Technologies | 24 | Expired |
| US7476137B2 | Expandable wave energy conversion system | Emerging Cross-Sectional Technologies | 23 | Active |
| US7310944B2 | Wave energy converters (WECs) with velocity multiplication | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4270245A | Lag or stave assembly for Kirschner beaters | Textiles; Paper | 18 | Expired |
| US7397152B2 | Circuitry for increasing efficiency of a linear electric generator | Electricity | 14 | Expired |
| US4593706A | Producing filler material, particularly for cigarette filters | Human Necessities | 14 | Expired |
| US8067849B2 | Wave energy converter with internal mass on spring oscillator | Emerging Cross-Sectional Technologies | 13 | Active |
| US4528050A | Producing filler material, particularly for cigarette filters | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6921246B2 | Methods and apparatus for assembling gas turbine nozzles | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4184619A | Cutting device | Emerging Cross-Sectional Technologies | 10 | Expired |
| US8487459B2 | Wave energy converter and power take off system | Emerging Cross-Sectional Technologies | 9 | Active |
| US4162559A | Carding apparatus | Textiles; Paper | 7 | Expired |
| US4869060A | Fiber opening devices | Textiles; Paper | 5 | Expired |
| US9115686B2 | Wave energy converter with rotary hydraulic spring | Emerging Cross-Sectional Technologies | 5 | Active |
| US5447238A | Separating mechanism | Textiles; Paper | 5 | Expired |
| US4510949A | Feeding particulate material, especially tobacco | Textiles; Paper | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.