Ronald E. Hess
9Patents
6h-index
13Co-inventors
52Inventor score
Filing activity: Sep 27, 1989 → Jan 8, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5050676A | Process for two phase vacuum extraction of soil contaminants | Fixed Constructions | 51 | Expired |
| US5441365A | Apparatus and process for treating contaminated soil gases and liquids | Performing Operations; Transporting | 38 | Expired |
| US5358357A | Process and apparatus for high vacuum groundwater extraction | Performing Operations; Transporting | 37 | Expired |
| US5197541A | Apparatus for two phase vacuum extraction of soil contaminants | Performing Operations; Transporting | 32 | Expired |
| US5709505A | Vertical isolation system for two-phase vacuum extraction of soil and groundwater contaminants | Performing Operations; Transporting | 28 | Expired |
| US5655852A | High vacuum extraction of soil contaminants along preferential flow paths | Performing Operations; Transporting | 11 | Expired |
| US6024868A | Air flow control circuit for sustaining vacuum conditions in a contaminant extraction well | Performing Operations; Transporting | 3 | Expired |
| US6048134A | Automatic aspirator air control system | Performing Operations; Transporting | 3 | Expired |
| US5979554A | Vacuum application method and apparatus for removing liquid contaminants from groundwater | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.