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Official data from INPI

PROCESSO PARA PREPARAR UM MATERIAL DE ESPUMA CERÂMICA E RESPECTIVO MATERIAL

PublicadaInvention Patent

Application data

Number

PI8902020

Type

Invention Patent

Filing

04/28/1989

Publication

12/05/1989

Progress at the INPI

  1. Filing04/28/89
  2. Publication12/05/89
  3. Examination08/14/90
  4. Allowance
  5. Grant
  6. In force

Published on 12/05/1989, 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: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Swiss Aluminium Ltd

CH

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Inventors

J. M. (pessoa física)

M. R. (pessoa física)

P. H. (pessoa física)

Technical data

IPC Classification

Priority claims

US

189,036 · 05/02/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/05/1989

RPI 998

Pedido de patente depositado

#2.1

06/13/1989

RPI 973

Retificação

#15.3

10/10/1995

RPI 1297

Solicitação de exame técnico

#4.1

08/14/1990

RPI 1028

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