The Lemna Corporation

Organization

Minneapolis, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for treating wastewater
- Patent number 6,136,194
- Issue date Oct 24, 2000
- The Lemna Corporation
- Steven M. Vogel
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method and device for treating wastewater
- Patent number 5,861,095
- Issue date Jan 19, 1999
- Lemna Corporation
- Steven M. Vogel
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Hybrid biological nutrient removal system
- Patent number 5,736,047
- Issue date Apr 7, 1998
- Lemna Corporation
- Viet H. Ngo
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Wastewater treatment system with in-pond clarifier
- Patent number 5,534,141
- Issue date Jul 9, 1996
- The Lemna Corporation
- David W. McAnaney
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Floating nitrification reactor in a treatment pond
- Patent number 5,421,999
- Issue date Jun 6, 1995
- The Lemna Corporation
- Warren D. Poole
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Floating aquatic plant treatment system
- Patent number 5,409,601
- Issue date Apr 25, 1995
- The Lemna Corporation
- Viet H. Ngo
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
High rate anaerobic reactor for primary treatment of high strength...
- Patent number 5,338,452
- Issue date Aug 16, 1994
- The Lemna Corporation
- Surya R. Pidaparti
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Floating aquatic plant water treatment system with sprayer system
- Patent number 5,264,127
- Issue date Nov 23, 1993
- The Lemna Corporation
- Viet H. Ngo
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Baffle system for anaerobic sewage treatment pond
- Patent number 5,256,281
- Issue date Oct 26, 1993
- The Lemna Corporation
- Viet Ngo
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method of harvesting aquatic plants
- Patent number 5,235,797
- Issue date Aug 17, 1993
- The Lemna Corporation
- Victor V. Sygen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Method and apparatus for harvesting aquatic plants
- Patent number 5,197,263
- Issue date Mar 30, 1993
- The Lemna Corporation
- Brian J. Midtling
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Floating aquatic plant water treatment system
- Patent number 5,180,501
- Issue date Jan 19, 1993
- The Lemna Corporation
- Viet H. Ngo
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Aquatic plant harvester
- Patent number 5,161,354
- Issue date Nov 10, 1992
- The Lemna Corporation
- Victor V. Sygen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Floating aquatic plant water treatment system
- Patent number 5,096,577
- Issue date Mar 17, 1992
- The Lemna Corporation
- Viet H. Ngo
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Aquatic biomass containment barrier and method of assembling same
- Patent number 4,536,988
- Issue date Aug 27, 1985
- The Lemna Corporation
- Delman R. Hogen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

The Lemna Corporation

Organization

Patents Grantslast 30 patents

Method and device for treating wastewater

Method and device for treating wastewater

Hybrid biological nutrient removal system

Wastewater treatment system with in-pond clarifier

Floating nitrification reactor in a treatment pond

Floating aquatic plant treatment system

High rate anaerobic reactor for primary treatment of high strength...

Floating aquatic plant water treatment system with sprayer system

Baffle system for anaerobic sewage treatment pond

Method of harvesting aquatic plants

Method and apparatus for harvesting aquatic plants

Floating aquatic plant water treatment system

Aquatic plant harvester

Floating aquatic plant water treatment system

Aquatic biomass containment barrier and method of assembling same