Robert Walker
7Patents
4h-index
3Co-inventors
50Inventor score
Filing activity: Nov 19, 1974 → Jan 5, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3985332A | Non-refillable safety valve | Mechanical Engineering; Lighting; Heating | 47 | Expired |
| US4191211A | Valve member for a non-return valve | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4928425A | Greenhouse with integral humidifier | Emerging Cross-Sectional Technologies | 8 | Expired |
| US3985156A | Gas and liquid flow control valve | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7497173B1 | Seed placement device | Human Necessities | 1 | Active |
| US11904742B2 | Autonomous vehicle configurable for transportation of passengers and cargo | Performing Operations; Transporting | 0 | Active |
| US12269326B2 | Autonomous vehicle configurable for transportation of passengers and cargo | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.