John Matthews
8Patents
4h-index
14Co-inventors
54Inventor score
Filing activity: Apr 6, 1987 → Mar 27, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6026991A | Apparatus, system, and method for additizing a liquid product | Physics | 18 | Expired |
| US6585009B2 | System for periodic fluid maintenance of apparatus | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6568436B1 | System for periodic fluid maintenance of apparatus | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4872370A | Piston rod assembly including preloaded piston head and composite rod | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8251081B2 | Device for metering fluids | Emerging Cross-Sectional Technologies | 3 | Active |
| US6244094A | Closed loop calibrator and process of calibrating a liquid metering device in a closed atmosphere | Physics | 1 | Expired |
| US6647838B2 | Coupler tool | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US9947192B2 | Metal-theft detection device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.