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ZIMPRO PASSAVANT ENVIRONMENTAL SYSTEMS, INC
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ROTHSCHILD, WI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Wet oxidation of ammonium salt containing liquors
Patent number
5,262,060
Issue date
Nov 16, 1993
Zimpro Passavant Environmental Systems, Inc.
Richard W. Lehmann
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Two-stage subcritical-supercritical wet oxidation
Patent number
5,240,619
Issue date
Aug 31, 1993
Zimpro Passavant Environmental Systems, Inc.
William M. Copa
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Corrosion control for wet oxidation systems
Patent number
5,230,810
Issue date
Jul 27, 1993
Zimpro Passavant Environmental Systems, Inc.
Mark A. Clark
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Multiple zone batch treatment process
Patent number
5,192,442
Issue date
Mar 9, 1993
Zimpro Passavant Environmental Systems, Inc.
John Piccirillo
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for treatment of wastewater containing inorganic ammonium s...
Patent number
5,183,577
Issue date
Feb 2, 1993
Zimpro Passavant Environmental Systems, Inc.
Richard W. Lehmann
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Underdrain for granular medium filter
Patent number
5,089,147
Issue date
Feb 18, 1992
Zimpro Passavant Environmental Systems, Inc.
David S. Ross
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Automatically controlled splash plate
Patent number
5,084,163
Issue date
Jan 28, 1992
Zimpro Passavant Environmental Systems, Inc.
Thomas L. Baumann
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Caustic sulfide wet oxidation process
Patent number
5,082,571
Issue date
Jan 21, 1992
Zimpro Passavant Environmental Systems Inc.
David A. Beula
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for color removal from thermally conditioned sludge liquors
Patent number
5,075,015
Issue date
Dec 24, 1991
Zimpro Passavant Environmental Systems, Inc.
Robert J. Kamke
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for starting up and controlling operating temperature of a w...
Patent number
5,057,231
Issue date
Oct 15, 1991
Zimpro Passavant Environmental Systems, Inc.
Gene W. Mueller
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Furnace combustion zone temperature control method
Patent number
5,018,458
Issue date
May 28, 1991
Zimpro Passavant Environmental Systems, Inc.
Glover C. McIntyre
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Control valve with displacement-compensating seal
Patent number
5,011,114
Issue date
Apr 30, 1991
Zimpro Passavant Environmental Systems, Inc.
Kent T. Depuydt
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
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last 30 patents
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