Duane Preston
8Patents
7h-index
11Co-inventors
60Inventor score
Filing activity: Apr 7, 1989 → May 26, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5421162A | LNG delivery system | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US5682750A | Self-contained liquid natural gas filling station | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5616838A | Metering apparatus for cryogenic liquids | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5787942A | Float-type shut off device for a cryogenic storage tank | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5542255A | High temperature resistant thermal insulation for cryogenic tanks | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4947651A | Pressure building circuit for a container for low temperature fluids | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US7836976B2 | Underground piercing tool | Fixed Constructions | 7 | Active |
| US9976659B2 | Decompression coupling block | Mechanical Engineering; Lighting; Heating | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.