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Official data from INPI

MATRIZ DE EXTRUSÃO E PROCESSO DE EXTRUDAR ALUMÍNIO OU MAGNÉSIO OU UMA DE SUAS LIGAS

Em AnáliseInvention Patent

Application data

Number

PI8506269

Type

Invention Patent

Filing

12/13/1985

Publication

08/26/1986

Progress at the INPI

  1. Filing12/13/85
  2. Publication08/26/86
  3. Examination12/16/86
  4. Allowance09/22/92
  5. Grant04/27/93
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 12/16/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

See this company's full portfolio

Inventors

J. H. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

GB

8431667 · 12/14/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/16/1986

RPI 843

Publicação do pedido de patente

#3.1

08/26/1986

RPI 827

Pedido de patente depositado

#2.1

02/25/1986

RPI 801

Carta-patente expirada

#21.1

Patente extinta em 13/12/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

02/02/1993

RPI 1157

Deferimento

#9.1

09/22/1992

RPI 1138

Exigência - art. 36 da LPI

#6.1

09/03/1991

RPI 1083

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