John Koopman
3Patents
2h-index
15Co-inventors
37Inventor score
Filing activity: Nov 26, 2002 → Mar 26, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8162398B2 | Zone lumbar massage system | Human Necessities | 21 | Active |
| US7159444B2 | Combustible gas detection systems and method thereof | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7111493B2 | Combustible gas detection system | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.