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1970-12-02 |
1976-07-06 |
Jerzy Tymoszczuk |
Process and apparatus for treating wastes by a combined activated sludge and biological filter bed
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1971-07-09 |
1974-12-17 |
P Garbo |
Oxygenation of waste water
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JPS5551595Y2
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1972-07-31 |
1980-12-01 |
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1972-11-17 |
1975-12-23 |
Degremont |
Method of biological purification of sewage
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JPS5419726Y2
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1973-01-18 |
1979-07-19 |
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1973-06-07 |
1974-11-26 |
Mcquay Perfex Inc |
Waste water purification system
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1973-06-25 |
1975-04-08 |
August Schreiber |
Apparatus for physically and biologically purifying sewage
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1974-01-25 |
1976-09-14 |
Ontario Research Foundation |
Adsorption biooxidation treatment of waste waters to remove contaminants therefrom
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JPS50103847A
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1974-01-25 |
1975-08-16 |
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JPS50108752A
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1974-02-06 |
1975-08-27 |
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JPS50128350A
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1974-03-29 |
1975-10-09 |
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JPS50140253U
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1974-05-04 |
1975-11-19 |
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JPS5147662A
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1974-10-23 |
1976-04-23 |
Nippon Filcon Kk |
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1975-01-21 |
1977-02-15 |
Ontario Research Foundation |
Renovation of waste water
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JPS5624593B2
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1975-02-05 |
1981-06-06 |
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JPS51116662U
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1975-03-12 |
1976-09-21 |
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JPS51117467U
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1975-03-19 |
1976-09-24 |
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JPS5633671Y2
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1975-03-24 |
1981-08-10 |
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JPS51136367A
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1975-05-20 |
1976-11-25 |
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Aerobic waste water treating apparatus
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JPS5234567U
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1975-09-02 |
1977-03-11 |
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JPS5235174U
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1975-09-04 |
1977-03-12 |
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JPS5272356U
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1975-11-26 |
1977-05-30 |
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JPS5276164U
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1975-12-04 |
1977-06-07 |
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JPS5279555A
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1975-12-24 |
1977-07-04 |
Matsushita Electric Works Ltd |
Waste water treating apparatus
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JPS5279553A
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1975-12-25 |
1977-07-04 |
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Tank for purifying sanitary sewage
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1975-12-29 |
1977-07-08 |
Toyo Kuriin Kagaku Kk |
Apparatus for advanced tratment of organic sewage
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JPS5330774U
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1976-08-24 |
1978-03-16 |
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1978-01-07 |
1984-05-03 |
Werner 4933 Blomberg Borcheld |
Fischzuchtanlage
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1979-03-05 |
1980-12-09 |
Sanilogical Corporation |
Apparatus for the treatment of sewage
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1979-03-15 |
1980-09-16 |
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Centrifuge
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1979-03-19 |
1981-07-21 |
Arco Environmental Company |
Wastewater treatment system including multiple stages of alternate aerobic-anerobic bioreactors in series
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1979-04-10 |
1983-02-17 |
マルイ工業株式会社 |
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1979-05-30 |
1981-03-10 |
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Water purification process
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1980-08-21 |
1982-04-01 |
Erwin Sander Elektroapparatebau GmbH & Co KG, 3151 Eltze |
Verfahren und vorrichtung zum reinigen von wasser im bereich der aquaristik o.dgl.
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1981-07-02 |
1983-10-20 |
Buckau-Walther AG, 4048 Grevenbroich |
Vorrichtung zur Abwasserreinigung
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1984-02-27 |
1986-07-08 |
Polybac Corporation |
Submerged fixed film biological treatment system
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1984-04-02 |
1987-09-29 |
Aqua Strip Corporation |
Water purification apparatus
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1984-04-19 |
1985-10-31 |
Linde Ag, 6200 Wiesbaden |
Verfahren und vorrichtung zum anaeroben abbau von organischem substrat
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1984-10-05 |
1986-04-17 |
Bayer Ag, 5090 Leverkusen |
Verfahren zur reinigung von abwasser
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1988-05-12 |
1991-11-05 |
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Method for water purification
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1988-05-12 |
1990-05-15 |
Biotrol, Inc. |
Arrangement for water purification
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1988-09-09 |
1990-06-12 |
Eiji Oshima |
Multi-unit flush system having carbon adsorber column in calcium carbonate bed
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1993-11-10 |
1996-01-23 |
Ocean Arks International, Inc. |
Ecological fluidized bed method for the treatment of polluted water
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1994-08-23 |
1996-08-13 |
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Combined aerobic & anaerobic treating method & facility for hog wastewater
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1995-01-23 |
1996-06-18 |
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Fluidized bed biological filter system for fish tanks
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Dharma Living Systems, Inc. |
Integrated hydroponic and fixed-film wastewater treatment systems and associated methods
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Dharma Living Systems Inc |
Systemes de traitement des eaux usees integres par hydroponie et milieux humides et procedes associes
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Dharma Living Systems, Inc. |
Tidal vertical flow wastewater treatment system and method
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Integrated tidal wastewater treatment system and method
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Flood and drain wastewater treatment system and associated methods
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2007-11-27 |
Heritage Crystal Clean, Llc |
Portable filter system
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2008-03-25 |
Worrell Water Technologies, Llc |
Nitrogen removal system and method for wastewater treatment lagoons
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2010-02-23 |
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Dual cell nitrogen removal apparatus
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2015-04-21 |
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2013-02-12 |
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Method and apparatus for the bio-remediation of aqueous waste compositions
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2017-05-15 |
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Sewage treatment system
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2015-10-20 |
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Method and apparatus for the bio-remediation of aqueous waste compositions
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