Siang Leong Foo
17Patents
6h-index
15Co-inventors
55Inventor score
Filing activity: Feb 20, 2003 → Jan 27, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7145127B2 | Optical encoding that utilizes total internal reflection | Physics | 17 | Expired |
| US7385178B2 | Reflective encoders with various emitter-detector configurations | Physics | 11 | Expired |
| US7265339B1 | Encoder interpolation apparatus | Physics | 9 | Expired |
| US7182258B2 | Enhanced reflective optical encoder | Physics | 9 | Expired |
| US7784694B2 | Reflective encoder with lens on code strip | Physics | 7 | Active |
| US6998601B2 | Dual-axis optical encoder device | Physics | 7 | Expired |
| US7399956B2 | Optical encoder with sinusoidal photodetector output signal | Physics | 6 | Expired |
| US7675026B2 | Optical jog wheel with spiral coding element | Physics | 5 | Active |
| US7317183B2 | High performance reflectivity optical encoder with a protrusion between lenses | Physics | 4 | Active |
| US8247758B2 | Optical jog wheel with spiral coding element | Physics | 4 | Active |
| US7619210B2 | Encoder with a combined position and index track | Physics | 4 | Active |
| US7619209B2 | Encoder with a combined position and index track | Physics | 4 | Active |
| US7507950B2 | Encoder with a combined position and index track | Physics | 3 | Active |
| US7262714B2 | Interpolating encoder utilizing a frequency multiplier | Physics | 3 | Expired |
| US7732756B2 | User navigation device with a code wheel and an encoder | Physics | 2 | Active |
| US7544924B2 | Directional input device with a light directing shaft | Physics | 1 | Active |
| US7780258B2 | Media sensor with polarization filter | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.