John Sedwick Simpson
5Patents
4h-index
16Co-inventors
54Inventor score
Filing activity: Nov 14, 1978 → Jan 13, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6934691B1 | System and method for managing mail/bills through a central location | Physics | 61 | Expired |
| US5197765A | Varying tone securing document | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4478817A | Detecting or quantifying substances using labelling techniques | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6868388B1 | Integrated voice and data system and auto retail channel network portal | Physics | 18 | Expired |
| US11468067B2 | Information storage system for user inquiry-directed recommendations | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.