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Official data from INPI

PROCESSO DE LAMINAÇÃO A FRIO DE FOLHA DE ALUMÍNIO E LUBRIFICANTE PARA LAMINAÇÃO A FRIO DE ALUMÍNIO

Em AnáliseInvention Patent

Application data

Number

PI8505702

Type

Invention Patent

Filing

11/12/1985

Publication

08/12/1986

Progress at the INPI

  1. Filing11/12/85
  2. Publication08/12/86
  3. Examination12/09/86
  4. Allowance08/06/91
  5. Grant04/28/92
  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: 12/09/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

See this company's full portfolio

Inventors

M. F. (pessoa física)

GB

M. B. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

GB

8428621 · 11/13/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/09/1986

RPI 842

15.16

10/14/1986

RPI 834

Publicação do pedido de patente

#3.1

08/12/1986

RPI 825

Pedido de patente depositado

#2.1

01/21/1986

RPI 796

Carta-patente expirada

#21.1

Patente extinta em 12/11/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

04/28/1992

RPI 1117

Notificação para pagamento de retribuição

#13.1

12/03/1991

RPI 1096

Deferimento

#9.1

08/06/1991

RPI 1079

Exigência - art. 36 da LPI

#6.1

02/05/1991

RPI 1053

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