Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6048134 | Automatic aspirator air control system | Alfonso R. Mancini, Richard A. Williams | 2000-04-11 |
| 6024868 | Air flow control circuit for sustaining vacuum conditions in a contaminant extraction well | Michael T. Salotti, Richard A. Williams | 2000-02-15 |
| 5979554 | Vacuum application method and apparatus for removing liquid contaminants from groundwater | Alfonso R. Mancini, Richard A. Williams | 1999-11-09 |
| 5709505 | Vertical isolation system for two-phase vacuum extraction of soil and groundwater contaminants | Richard A. Williams, Michael T. Salotti, John F. Thomasser, Scott M. Huber, Eliott N. Duffney +1 more | 1998-01-20 |
| 5655852 | High vacuum extraction of soil contaminants along preferential flow paths | Eliott N. Duffney, Paul M. Tornatore, Scott M. Huber | 1997-08-12 |
| 5441365 | Apparatus and process for treating contaminated soil gases and liquids | Eliott N. Duffney, Paul M. Tornatore, Scott M. Huber | 1995-08-15 |
| 5358357 | Process and apparatus for high vacuum groundwater extraction | Alfonso R. Mancini, Richard A. Williams, Douglas J. Montgomery, Heinrich J. Jurzysta | 1994-10-25 |
| 5197541 | Apparatus for two phase vacuum extraction of soil contaminants | Albert A. Hooper, Steven R. Morrow, Dianne J. Walker, Erich Zimmerman | 1993-03-30 |
| 5050676 | Process for two phase vacuum extraction of soil contaminants | Albert A. Hooper, Steven R. Morrow, Dianne J. Walker, Erich Zimmerman | 1991-09-24 |