Donna Campbell
9Patents
5h-index
7Co-inventors
52Inventor score
Filing activity: Oct 31, 2007 → Mar 22, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD623200S1 | Pump throat | General | 42 | Expired |
| USD726873S1 | Pinch valve | General | 9 | Active |
| US8726831B2 | Apparatus and methods for purging material application device | Performing Operations; Transporting | 8 | Active |
| USD623664S1 | Pump injector | General | 7 | Expired |
| USD696694S1 | Pump | General | 6 | Active |
| USD744615S1 | Pinch valve | General | 5 | Active |
| US11543038B2 | Dense phase pump with easily replaceable components | Emerging Cross-Sectional Technologies | 1 | Active |
| US10989316B2 | Dense phase pump with easily replaceable components | Emerging Cross-Sectional Technologies | 1 | Active |
| US9266137B2 | Apparatus and methods for purging material application device | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.