Helenio de Carvalho Ellery Filho

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Aflitos-Recife, BR

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Patents Grantslast 30 patents

Information Patent Grant
Biological filtration system for removal of nitrogen compounds in a...
- Patent number 9,764,975
- Issue date Sep 19, 2017
- Helenio de Carvalho Ellery Filho
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
BIOLOGICAL FILTRATION SYSTEM FOR REMOVAL OF NITROGEN COMPOUNDS IN A...
- Publication number 20170029303
- Publication date Feb 2, 2017
- Helenio de Carvalho Ellery Filho
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING