Timothy T. France

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Oakdale, MN, US

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Patents Grantslast 30 patents

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
Floating aquatic plant treatment system with porous system
- Patent number 5,342,512
- Issue date Aug 30, 1994
- The Lemma Corporation
- Viet H. Ngo
- 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
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
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