David Edward Maddison
7Patents
7h-index
6Co-inventors
56Inventor score
Filing activity: Nov 28, 1983 → Oct 25, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4573612A | Liquid soap dispenser | Human Necessities | 75 | Expired |
| USD296478S | Flashlight | General | 31 | Expired |
| USD296477S | Flashlight | General | 22 | Expired |
| US8328733B2 | Urine collection device | Human Necessities | 16 | Active |
| US7819821B2 | Urine collection device | Human Necessities | 14 | Active |
| USD299173S | Flashlight | General | 13 | Expired |
| USD289480S | Module for liquid detergent pump and control components | General | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.