International Patents

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Bernhard et al. (1989): Methods of and Arrangement for driving volatile impurities from ground. U.S. Patent Number US4886119
Soil Air Vapour Extraction Using Double-Cased Screen European Patent Number EP0304712
Bernhardt B. (1990): Arrangement for expelling light volatile contaminants from liquids. U.S. Patent Number US4892688
Air-lift-UVB European Patent Number EP0242665
Bernhardt B. (1990): Aerating apparatus for expelling volatile impurities from ground water. U.S. Patent Number US4943305
UVB for confined aquifer European Patent Number EP0347576
Bernhardt et al. (1990): Arrangement for driving out volatile impurities from ground water. U.S. Patent Number US4950394
UVB upper and lower screen section European Patent Number EP0328993
Bernhardt B. (1990) Apparatus for cleaning and Aeration of open bodies of water. U.S. Patent Number US5071550
Swimming UVB European Patent Number EP0418571
Bernhardt B. (1992): Arrangement for cleaning contaminated ground water. U.S. Patent Number US5082053
GZB with bioreactor on-site and in-situ European Patent Number EP0418570
Bernhardt B. (1992): Arrangement for driving volatile Impurities from ground water. U.S. Patent Number US5095975
UVB standard and reverse flow with hydraulic pump off-gas recirculation European Patent Number EP0418572
Bernhardt B. (1992): Arrangement for driving out volatile impurities from ground water. U.S. Patent Number US5116163
CGS coaxial groundwater ventilation European Patent Number EP0437805
Bernhardt B. (1992): Arrangement for cleaning contaminated ground water. U.S. Patent Number US5143606
UVB with integrated filter sections European Patent Number EP0486976
Bernhardt B. (1992): Arrangement for driving out volatile impurities from ground water. U.S. Patent Number US5143607
UVB with stationary aeration pipe European Patent Number EP0490182
Bernhardt B. (1992): Arrangement for driving out of volatile impurities from ground water using Vibrations. U.S. Patent Number US5147535
UVB/GZB groundwater circulation with vibrations generator European Patent Number EP0431384
Bernhardt B. (1992): Arrangement for expelling highly volatile impurities from ground water. U.S. Patent Number US5171103
UVB reverse flow European Patent Number EP0466721
Bernhardt B. (1992): Arrangement for treating gas from contaminated ground region. U.S. Patent Number US5171104
Soil air circulation flow Coaxial groundwater circulation European Patent Number EP0458090
Bernhardt B. (1993): Arrangement for driving out of volatile impurities from ground water. U.S. Patent Number US5220958
UVB/GZB groundwater circulation Soil air circulation European Patent Number EP0472967
Bernhardt B. (1994): Arrangement for cleaning ground water. U.S. Patent Number US5281333
GZB with different screens European Patent Number EP0555734
Bernhardt B. (1994): Arrangement for cleaning contaminated ground water. U.S. Patent Number US5318698
GZB with bioreactor and aeration European Patent Number EP0543358
Bernhardt B. (1994): Method of forming well regions. U.S. Patent Number US5322128
Natural screen improving well efficiency European Patent Number EP0562301
Bernhardt B. (1994): Method of and Arrangement for determining geohydraulic permeability of ground regions through which ground water flows. U.S. Patent Number US5345820
determining vertical permeability European Patent Number EP0560150
Bernhardt B. (1994): Method and Arrangement for obtaining liquids and/or gases from ground or Rock layers. U.S. Patent Number US5345655
UVB for LNAPL or DNAPL recovery European Patent Number EP0556676
Bernhardt B. (1994): Method of yielding oil residues or oil containing liquids from contaminated ground water. U.S. Patent Number US5346330
Oil recovery with negative pressure and satellite boreholes European Patent Number EP0571798
Bernhardt B. (1994): Method and Arrangement for influencing liquid in ground. U.S. Patent Number US5348420
GZB with partial withdrawal or DNAPL recovery European Patent Number EP0548768
Bernhardt B. (1994): Test sample taking Arrangement. U.S. Patent Number US5375478
multilevel probe system European Patent Number EP EP0525698
Bernhardt B. (1995): Method of and Arrangement for rinsing out impurities from ground. U.S. Patent Number US5380126
SZB European Patent Number EP0572818
Bernhardt B. (1994): Arrangement for removing impurities from ground water. U.S. Patent Number US5403476
European Patent Number EP0571812

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