Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5910245 | Bioremediation well and method for bioremediation treatment of contaminated water | William G. Langley, Eric Klingel, James Mueller, Fayaz Lakhwala | 1999-06-08 |
| 5468097 | Method of circulating ground water in ground regions with a fall of ground water level | — | 1995-11-21 |
| 5435914 | Clarifying arrangement for waste water | — | 1995-07-25 |
| 5403476 | Arrangement for removing impurities from ground water | — | 1995-04-04 |
| 5380126 | Method of and arrangement for rinsing out impurities from ground | — | 1995-01-10 |
| 5375478 | Test sample taking arrangement | — | 1994-12-27 |
| 5348420 | Method and arrangement for influencing liquid in ground | — | 1994-09-20 |
| 5345820 | Method of and arrangement for determining geohydraulic permeability of ground regions through which ground water flows | — | 1994-09-13 |
| 5345655 | Method of and arrangement for obtaining liquids and/or gases from ground or rock layers | — | 1994-09-13 |
| 5346330 | Method of yielding oil residues or oil containing liquids from contaminated ground layers | — | 1994-09-13 |
| 5322128 | Method of forming well regions | — | 1994-06-21 |
| 5318698 | Arrangement for cleaning contaminated ground water | — | 1994-06-07 |
| 5281333 | Arrangement for cleaning ground water | — | 1994-01-25 |
| 5220958 | Arrangement for driving out of volatile impurities from ground water | — | 1993-06-22 |
| 5171103 | Arrangement for expelling highly volatile impurities from ground water | — | 1992-12-15 |
| 5171104 | Arrangement for treating gas from contaminated ground region | — | 1992-12-15 |
| 5147535 | Arrangement for driving out of volatile impurities from ground water using vibrations | — | 1992-09-15 |
| 5143606 | Arrangement for cleaning contaminated ground water | — | 1992-09-01 |
| 5143607 | Arrangement for driving out volatile impurities from ground water | — | 1992-09-01 |
| 5116163 | Arrangement for driving out volatile impurities from ground water | — | 1992-05-26 |
| 5095975 | Arrangement for driving volatile impurities from ground water | — | 1992-03-17 |
| 5082053 | Arrangement for cleaning contaminated ground water | — | 1992-01-21 |
| 5071550 | Appartus for cleaning and aeration of open bodies of water | — | 1991-12-10 |
| 4950394 | Arrangement for driving out volatile impurities from ground water | Anton Hessner, Rainer Krug | 1990-08-21 |
| 4943305 | Aerating apparatus for expelling volatile impurities from ground water | — | 1990-07-24 |