David J. Ellingham
4Patents
4h-index
8Co-inventors
36Inventor score
Filing activity: Jul 3, 1989 → Oct 28, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5006900A | Transfer apparatus having vacuum holes and method of making such apparatus | Performing Operations; Transporting | 12 | Expired |
| US5155535A | Transfer apparatus having a transfer member with vacuum means | Physics | 6 | Expired |
| US5282008A | Magnetic roller cleaning apparatus | Physics | 5 | Expired |
| US5119550A | Method of making transfer apparatus having vacuum holes | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.