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1963-09-02 |
1966-04-30 |
Cellulosefabrik Attisholz Ag V |
Verfahren und Einrichtung zur Reinigung von Abwasser nach dem Belebtschlammverfahren
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1963-11-15 |
1967-02-28 |
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Water purification system
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1964-04-23 |
1977-07-12 |
Tii Corporation |
System for pollution suppression
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1965-08-11 |
1968-02-27 |
Fmc Corp |
Method of treating sewage and apparatus therefor
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1966-05-09 |
1968-04-26 |
Wibau Gmbh |
Procédé et dispositif pour l'épuration des eaux usées
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1967-12-01 |
1970-12-15 |
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1974-12-17 |
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1971-12-20 |
1975-12-30 |
Gary Aircraft Corp |
Process for biochemical reactions
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1972-03-02 |
1977-03-08 |
Badische Anilin- & Soda-Fabrik Aktiengesellschaft |
Treatment of waste water produced in the manufacture of expandable polystyrene
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1972-07-31 |
1980-12-01 |
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1972-08-02 |
1974-03-29 |
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1973-03-29 |
1974-11-25 |
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1973-06-14 |
1975-11-26 |
Boc International Ltd |
Treatment of filters used in the purification of waste water
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1973-12-18 |
1975-07-31 |
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1974-03-25 |
1977-10-11 |
Exxon Research & Engineering Co. |
Control of aerobic biological growth in activated carbon waste water treatment
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1975-04-30 |
1976-12-08 |
Dowa Mining Co Ltd |
Method for oxidation treatment of fe2+ in waste liquor
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1975-07-23 |
1978-02-15 |
Sulzer Ag |
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1980-07-22 |
1985-10-15 |
Neptune Microfloc, Inc. |
Water filtration process and apparatus having upflow filter with buoyant filter media and downflow filter with nonbuoyant filter media
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1980-08-06 |
1988-05-10 |
The State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University |
Method and apparatus for separating suspended solids from liquids
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1981-05-08 |
1986-03-17 |
Flaekt Ab |
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1982-07-29 |
1984-02-02 |
Linde Ag, 6200 Wiesbaden |
Verfahren und vorrichtung zur biologischen reinigung von abwasser
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1986-08-26 |
Neptune Microfloc, Inc. |
Water filtration apparatus having upflow buoyant media filter and downflow nonbuoyant media filter
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1984-05-23 |
1990-08-21 |
Samuel Elmaleh |
Procede pour le traitement et l'epuration des eaux, par floculation en lit fluidise des particules en suspension
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1987-09-03 |
1989-03-16 |
Tecon Gmbh |
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1992-08-06 |
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1992-05-07 |
1993-11-11 |
Schering Ag |
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1996-10-18 |
1999-02-23 |
The Academy Of Natural Sciences Of Philadelphia |
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2001-10-18 |
2004-12-28 |
Clemson University |
Process for ozonating and converting organic materials into useful products
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2005-12-23 |
2010-01-26 |
Clemson University Research Foundation |
Process for reducing waste volume
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Huei Meng Chang |
Methods and apparatuses for water treatment
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