Johannes van Leeuwen

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County of Story, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Bypass flow and ozone proportion method and system
- Patent number 7,416,660
- Issue date Aug 26, 2008
- Nutech 03, Inc.
- Johannes van Leeuwen
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Ozone retention method and system
- Patent number 7,407,592
- Issue date Aug 5, 2008
- Nutech 03, Inc.
- Johannes van Leeuwen
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Controlled bypass flow and ozone proportion method and system
- Patent number 7,402,253
- Issue date Jul 22, 2008
- Nutech 03, Inc.
- Johannes van Leeuwen
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Ballast water treatment system and method without off-gas
- Patent number 7,381,338
- Issue date Jun 3, 2008
- Nutech 03, Inc.
- Johannes van Leeuwen
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents

Information Patent Application
Controlled bypass flow and ozone proportion method and system
- Publication number 20060243673
- Publication date Nov 2, 2006
- NUTECH O3
- Johannes van Leeuwen
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE