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Official data from INPI

REVESTIMENTO DE TÉRMITA SOBRE UM FILTRO DE METAL FUNDIDO

Em AnáliseInvention Patent

Application data

Number

PI8904230

Type

Invention Patent

Filing

08/23/1989

Publication

04/10/1990

Progress at the INPI

  1. Filing08/23/89
  2. Publication04/10/90
  3. Examination07/07/92
  4. Allowance
  5. Grant
  6. In force

Published on 04/10/1990, 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: 04/29/1997. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. I. (pessoa física)

US

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Inventors

J. D. (pessoa física)

US

T. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

241,581 · 09/08/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

04/29/1997

RPI 1378

Solicitação de exame técnico

#4.1

07/07/1992

RPI 1127

Publicação do pedido de patente

#3.1

04/10/1990

RPI 1013

Pedido de patente depositado

#2.1

01/16/1990

RPI 1002

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