Derek Daniel Johnson
2Patents
2h-index
5Co-inventors
30Inventor score
Filing activity: Jan 26, 2001 → Aug 14, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6535838B2 | Furnace diagnostic system | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US6658372B2 | Furnace diagnostic system | Mechanical Engineering; Lighting; Heating | 26 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.