N. V. Waterleiding Friesland

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Leeuwarden, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for treating aqueous flows in a bioreactor, an ul...
- Patent number 6,592,763
- Issue date Jul 15, 2003
- N. V. Waterleiding Friesland
- Hendrik Rienk Benedictus
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method and apparatus for removing floating substances and salts fro...
- Patent number 6,576,136
- Issue date Jun 10, 2003
- DHV Water B.V.
- Petrus Jacob De Moel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process and apparatus for decoloring liquids and water product thereof
- Patent number 6,395,177
- Issue date May 28, 2002
- N. V. Waterleiding Friesland
- Jacobus Cornelis Van Winkelen
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Coupling unit for membrane elements
- Patent number 6,302,448
- Issue date Oct 16, 2001
- N. V. Waterleiding Friesland
- Walterus Gijsbertus Joseph Van Der Meer
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

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