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Official data from INPI

PROCESSO PARA FORMAR SUPERPLASTICAMENTE UM ARTIGO E ARTIGO ASSIM OBTIDO

DeferidaInvention Patent
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Application data

Number

PI8304649

Type

Invention Patent

Filing

08/26/1983

Publication

04/10/1984
View on INPI

Progress at the INPI

  1. Filing08/26/83
  2. Publication04/10/84
  3. Examination06/04/85
  4. Allowance11/28/89
  5. Grant05/29/90
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

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Inventors

R. G. (pessoa física)

JP

Technical data

IPC Classification

C22C 21/16C22F 1/04

Priority claims

GB

8224661 · 08/27/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

11/28/1989

RPI 997

Exigência - art. 36 da LPI

#6.1

08/08/1989

RPI 981

Exigência - art. 36 da LPI

#6.1

09/13/1988

RPI 934

6.2

08/19/1986

RPI 826

Solicitação de exame técnico

#4.1

06/04/1985

RPI 763

Publicação do pedido de patente

#3.1

04/10/1984

RPI 703

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Carta-patente expirada

#21.1

Patente extinta em 26/08/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

05/29/1990

RPI 1020

Notificação para pagamento de retribuição

#13.1

04/03/1990

RPI 1012

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