David H. Edwards
9Patents
7h-index
8Co-inventors
56Inventor score
Filing activity: Dec 18, 1978 → Oct 26, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4727936A | Recovery and control system for leachate collection | Fixed Constructions | 42 | Expired |
| US8756991B2 | Pneumatic indicator for detecting liquid level | Physics | 35 | Active |
| US5358037A | Float operated pneumatic pump | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US5358038A | Float operated pneumatic pump | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6039546A | Float operated pneumatic pump to separate hydrocarbon from water | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4724325A | Adhesion cooling for an ion implantation system | Electricity | 10 | Expired |
| US5495890A | Float operated pneumatic pump | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4214473A | Gaseous trace impurity analyzer and method | Physics | 5 | Expired |
| US4302679A | Method of determining the x-ray limit of an ion gauge | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.