Derek Johnston
7Patents
5h-index
10Co-inventors
56Inventor score
Filing activity: Apr 9, 1998 → Oct 27, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6426703B1 | Carbon monoxide and smoke detection apparatus | Emerging Cross-Sectional Technologies | 46 | Expired |
| US6819252B2 | Carbon monoxide and smoke detection apparatus | Emerging Cross-Sectional Technologies | 38 | Expired |
| US7417540B2 | Wireless linking of smoke/CO detection units | Physics | 19 | Active |
| US6762688B2 | Device with silencing circuitry | Physics | 13 | Expired |
| US8066859B2 | Electrochemical carbon monoxide sensor supervision | Physics | 11 | Active |
| US6731207B1 | Modular detector system | Physics | 5 | Expired |
| US7009521B2 | Power supply and interconnect detector system | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.