PROCESSO PARA A DEPURAÇÃO DE RESÍDUOS CONTAMINANTES E INSTALAÇÃO PARA A REALIZAÇÃO PRÁTICA DO PROCESSO.

1. Filing09/22/81
2. Publication06/08/82
3. Examination09/21/82
4. Allowance03/05/85
5. Grant10/29/85
6. In force09/22/01

The patent was granted on 10/29/1985 and is in force until 09/22/2001. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:09/22/2001

Latest action published by the INPI: 10/29/1985. We update with every new RPI gazette, published weekly.