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Official data from INPI

LIGA Á BASE DE ALUMÍNIO E PROCESSO PARA PRODUZIR UMA CHAPA OU TIRA

Em ExigênciaInvention Patent

Application data

Number

PI8401499

Type

Invention Patent

Filing

03/30/1984

Publication

11/13/1984

Progress at the INPI

  1. Filing03/30/84
  2. Publication11/13/84
  3. Examination05/07/85
  4. Allowance03/13/90
  5. Grant07/30/91
  6. Expired07/08/08

The letters patent expired on 07/08/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/19/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

See this company's full portfolio

Inventors

W. M. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8308907 · 03/31/1983

GB

8308908 · 03/31/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

09/19/1989

RPI 987

6.2

06/28/1988

RPI 923

Solicitação de exame técnico

#4.1

05/07/1985

RPI 759

Publicação do pedido de patente

#3.1

11/13/1984

RPI 734

Pedido de patente depositado

#2.1

06/19/1984

RPI 713

Carta-patente expirada

#21.1

Patente extinta em 30/03/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

07/30/1991

RPI 1078

110

03/05/1991

RPI 1057

Recurso

#12.1

06/26/1990

RPI 1024

Deferimento

#9.1

03/13/1990

RPI 1009

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