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Official data from INPI

LIGA À BASE DE ALUMÍNIO E PROCESSO PARA A PRODUÇÃO DE UM PRODUTO SEMI-FABRICADO A PARTIR DE UMA LIGA À BASE DE ALUMÍNIO

ConcedidaInvention Patent

Application data

Number

PI8304798

Type

Invention Patent

Filing

09/02/1983

Publication

04/10/1984

Progress at the INPI

  1. Filing09/02/83
  2. Publication04/10/84
  3. Examination04/30/85
  4. Allowance05/16/89
  5. Grant11/28/89
  6. Terminated05/02/95

The patent was granted on 11/28/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

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

See this company's full portfolio

Inventors

W. M. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8225207 · 09/03/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/12/1989

RPI 986

Deferimento

#9.1

05/16/1989

RPI 969

Exigência - art. 36 da LPI

#6.1

11/08/1988

RPI 942

6.2

08/19/1986

RPI 826

Solicitação de exame técnico

#4.1

04/30/1985

RPI 758

Publicação do pedido de patente

#3.1

04/10/1984

RPI 703

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Anuidade - prazo legal encerrado

#18.2

05/02/1995

RPI 1274

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