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Official data from INPI

PROCESSO PARA TRATAMENTO DE SUPERFICIE DE PERMUTADORES DE CALOR DE ALUMINIO

Em AnáliseInvention Patent

Application data

Number

PI8402754

Type

Invention Patent

Filing

06/09/1983

Publication

05/14/1985

Progress at the INPI

  1. Filing06/09/83
  2. Publication05/14/85
  3. Examination10/22/85
  4. Allowance
  5. Grant
  6. In force

Published on 05/14/1985, 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: 09/22/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PARKER CHEMICAL CO [US]

Inventors

K. H. (pessoa física)

Y. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

09/22/1987

RPI 883

Solicitação de exame técnico

#4.1

10/22/1985

RPI 783

Publicação do pedido de patente

#3.1

05/14/1985

RPI 760

Pedido de patente depositado

#2.1

08/14/1984

RPI 721

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