David J. Hunniford

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Sarasota, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
System for controlling sulfide generation
- Patent number 7,326,340
- Issue date Feb 5, 2008
- Siemens Water Technologies Holding Corp.
- James Paul Harshman
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Methods and apparatus for reducing nitrate demands in the reduction...
- Patent number 7,285,207
- Issue date Oct 23, 2007
- Siemens Water Technologies Holding Corp.
- David J. Hunniford
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Methods and apparatus for reducing nitrate demands in the reduction...
- Patent number 7,186,341
- Issue date Mar 6, 2007
- Siemens Water Technologies Holding Corp.
- David J. Hunniford
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Apparatus for reducing nitrate demands in the reduction of dissolve...
- Patent number 7,138,049
- Issue date Nov 21, 2006
- USFilter Corporation
- David J. Hunniford
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Methods for reducing nitrate demands in the reduction of dissolved...
- Patent number 7,087,172
- Issue date Aug 8, 2006
- USFilter Corporation
- David J. Hunniford
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Methods and apparatus for reducing nitrate demands in the reduction...
- Publication number 20060186040
- Publication date Aug 24, 2006
- David J. Hunniford
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Methods and apparatus for reducing nitrate demands in the reduction...
- Publication number 20050242010
- Publication date Nov 3, 2005
- USFilter Corporation
- David J. Hunniford
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Methods and apparatus for reducing nitrate demands in the reduction...
- Publication number 20050242011
- Publication date Nov 3, 2005
- USFilter Corporation
- David J. Hunniford
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Method and apparatus for controlling sulfide generation
- Publication number 20050224409
- Publication date Oct 13, 2005
- USFilter Corporation
- James Paul Harshman
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Methods and apparatus for reducing nitrate demands in the reduction...
- Publication number 20040173525
- Publication date Sep 9, 2004
- United States Filter Corporation
- David J. Hunniford
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE