Richard L. Walker
12Patents
4h-index
20Co-inventors
60Inventor score
Filing activity: Nov 21, 1977 → Jun 16, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4922520A | Automatic telephone polling system | Electricity | 122 | Expired |
| US8034034B2 | Syringe and method of use | Human Necessities | 18 | Active |
| US6447350B2 | Transom saver apparatus | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4139854A | Variable temperature recording stylus | Physics | 6 | Expired |
| US8550619B2 | Removable lens eyewear system | Physics | 4 | Active |
| US6287575A | Vaccine against papillomatous digital dermatitis (PDD) | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6976340B2 | Universal access port | Physics | 3 | Expired |
| US6096323A | Vaccine against papillomatous digital dermatitis (PDD) | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7252586B2 | Universal access port | Physics | 1 | Expired |
| USD299403S | Nut cracker | General | 0 | Expired |
| US7442517B2 | Method for the detection of Salmonella enterica serovar Enteritidis | Chemistry; Metallurgy | 0 | Expired |
| US7167075B1 | Dual design resistor for high voltage conditioning and transmission lines | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.