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Official data from INPI

MEMBRANA DE MULTIPLAS CAMADAS PARA TROCA DE CATIONS

Em AnáliseInvention Patent

Application data

Number

PI8600705

Type

Invention Patent

Filing

02/22/1985

Publication

10/29/1986

Progress at the INPI

  1. Filing02/22/85
  2. Publication10/29/86
  3. Examination01/12/88
  4. Allowance
  5. Grant
  6. In force

Published on 10/29/1986, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 01/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

J. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

01/12/1988

RPI 899

Publicação do pedido de patente

#3.1

10/29/1986

RPI 836

Pedido de patente depositado

#2.1

09/16/1986

RPI 830

Retificação

#15.3

06/25/1991

RPI 1073

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