IEG INDUSTRIE-ENGINEERING GMBH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 2132
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 253

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5143606 Arrangement for cleaning contaminated ground waterNov 22, 91Sep 01, 92[C02F, B01D]
5143607 Arrangement for driving out volatile impurities from ground waterDec 13, 91Sep 01, 92[C02F, B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5468097 Method of circulating ground water in ground regions with a fall of ground water levelExpiredNov 16, 93Nov 21, 95[E02B]
5435914 Clarifying arrangement for waste waterExpiredApr 02, 93Jul 25, 95[C02F]
5403476 Arrangement for removing impurities from ground waterExpiredMay 28, 93Apr 04, 95[C02F]
5380126 Method of and arrangement for rinsing out impurities from groundExpiredMay 19, 93Jan 10, 95[E03B]
5375478 Test sample taking arrangementExpiredJul 30, 92Dec 27, 94[G01N, E21B]
5348420 Method and arrangement for influencing liquid in groundExpiredDec 24, 92Sep 20, 94[E03B]
5345655 Method of and arrangement for obtaining liquids and/or gases from ground or rock layersExpiredFeb 05, 93Sep 13, 94[E21B]
5345820 Method of and arrangement for determining geohydraulic permeability of ground regions through which ground water flowsExpiredMar 11, 93Sep 13, 94[E21B]
5346330 Method of yielding oil residues or oil containing liquids from contaminated ground layersExpiredMay 19, 93Sep 13, 94[B09B, E02B]
5322128 Method of forming well regionsExpiredMar 18, 93Jun 21, 94[E21B]
5318698 Arrangement for cleaning contaminated ground waterExpiredNov 23, 92Jun 07, 94[C02F]
5281333 Arrangement for cleaning ground waterExpiredFeb 05, 93Jan 25, 94[C02F, B01D]
5220958 Arrangement for driving out of volatile impurities from ground waterExpiredAug 15, 91Jun 22, 93[E21B, B01D]
5171104 Arrangement for treating gas from contaminated ground regionExpiredMay 06, 91Dec 15, 92[B09B]
5147535 Arrangement for driving out of volatile impurities from ground water using vibrationsExpiredDec 05, 90Sep 15, 92[B01D]
5116163 Arrangement for driving out volatile impurities from ground waterExpiredJan 16, 91May 26, 92[B09B]
5095975 Arrangement for driving volatile impurities from ground waterExpiredSep 13, 90Mar 17, 92[E21B]
5082053 Arrangement for cleaning contaminated ground waterExpiredSep 13, 90Jan 21, 92[E21B]
5071550 Appartus for cleaning and aeration of open bodies of waterExpiredSep 12, 90Dec 10, 91[C10J, B01D]
4950394 Arrangement for driving out volatile impurities from ground waterExpiredFeb 17, 89Aug 21, 90[E21B, B01D]

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