Robert Draper
33Patents
13h-index
45Co-inventors
81Inventor score
Filing activity: Jul 22, 1976 → May 10, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4470271A | Outdoor unit construction for an electric heat pump | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US5273838A | Double interconnection fuel cell array | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5200279A | Solid oxide fuel cell generator | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5258240A | Solid oxide fuel cell generator | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6379831B1 | Expanded nickel screen electrical connection supports for solid oxide fuel cells | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4664986A | High thermal conductivity gas feeder system | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6656623B2 | Low-cost atmospheric SOFC power generation system | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4601113A | Method and apparatus for fluidized steam drying of low-rank coals | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4449376A | Indoor unit for electric heat pump | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4449377A | Thermosyphon coil arrangement for heat pump outdoor unit | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4601115A | Method and apparatus for steam drying of low-rank coals using a rotary cylindrical vessel | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4622819A | Steam turbine exhaust pipe erosion prevention system | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4602438A | Method and apparatus for fluidized steam drying of low rank coals with wet scrubbing | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4073189A | Fluid flow monitoring device | Physics | 13 | Expired |
| US4727826A | Model steam generator having an improved feedwater system | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6610434B1 | Segregated exhaust SOFC generator with high fuel utilization capability | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4640233A | Model steam generator | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4660510A | Model steam generator having a thermosyphon heating means | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4637346A | Compact model steam generator having multiple primaries | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4801369A | Preventing fluids in leakable enclosures from intermixing | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7157172B2 | Combination nickel foam expanded nickel screen electrical connection supports for solid oxide fuel cells | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6492048B1 | Segregated exhaust fuel cell generator | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4635589A | Model steam generator having an improved feedwater system | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US7320836B2 | Integral air preheater and start-up heating means for solid oxide fuel cell power generators | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4628870A | Model steam generator having means to facilitate inspection of sample tubes | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.