ZIMPRO/PASSAVANT INC

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ROTHSCHILD, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic chemical cleaning of granular medium filters
- Patent number 4,983,308
- Issue date Jan 8, 1991
- Zimpro/Passavant Inc.
- Ronald L. Edwards
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Pulsing portions of a filter cell to extend a filter run
- Patent number 4,976,873
- Issue date Dec 11, 1990
- Zimpro/Passavant Inc.
- David S. Ross
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Continuous aeration-batch clarification wastewater treatment
- Patent number 4,952,316
- Issue date Aug 28, 1990
- Zimpro/Passavant Inc.
- Curtis D. Cooley
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Two-stage anaerobic/aerobic treatment process
- Patent number 4,919,815
- Issue date Apr 24, 1990
- Zimpro/Passavant Inc.
- William M. Copa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Two-stage batch wastewater treatment
- Patent number 4,897,196
- Issue date Jan 30, 1990
- Zimpro/Passavant Inc.
- William M. Copa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for treatment of water containing volatile and toxic compounds
- Patent number 4,857,198
- Issue date Aug 15, 1989
- Zimpro/Passavant Inc.
- John A. Meidl
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Slime control for primary filtration systems
- Patent number 4,818,414
- Issue date Apr 4, 1989
- Zimpro/Passavant Inc.
- David S. Ross
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for treating caustic cyanide metal wastes
- Patent number 4,812,243
- Issue date Mar 14, 1989
- Zimpro/Passavant Inc.
- Bruce L. Brandenburg
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Two-stage wastewater treatment
- Patent number 4,810,386
- Issue date Mar 7, 1989
- Zimpro/Passavant Inc.
- William M. Copa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for recovering regenerated adsorbent particles and separati...
- Patent number 4,749,492
- Issue date Jun 7, 1988
- Zimpro/Passavant
- John K. Berrigan
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
73744010 - PACT
- Serial number 73744010
- Registration number 1609667
- Filing date Aug 4, 1988
- ZIMPRO/PASSAVANT INC.
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes

ZIMPRO/PASSAVANT INC

Organization

Patents Grantslast 30 patents

Automatic chemical cleaning of granular medium filters

Pulsing portions of a filter cell to extend a filter run

Continuous aeration-batch clarification wastewater treatment

Two-stage anaerobic/aerobic treatment process

Two-stage batch wastewater treatment

Process for treatment of water containing volatile and toxic compounds

Slime control for primary filtration systems

Process for treating caustic cyanide metal wastes

Two-stage wastewater treatment

Process for recovering regenerated adsorbent particles and separati...

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

73744010 - PACT