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Official data from INPI

CÉLULA DE REDUÇÃO ELETROLÍTICA DE ALUMÍNIO

Em AnáliseInvention Patent

Application data

Number

PI8604265

Type

Invention Patent

Filing

09/05/1986

Publication

05/05/1987

Progress at the INPI

  1. Filing09/05/86
  2. Publication05/05/87
  3. Examination04/04/89
  4. Allowance05/26/92
  5. Grant01/26/93
  6. Terminated10/03/95

The patent was granted on 01/26/1993 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: 04/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

See this company's full portfolio

Inventors

A. G. (pessoa física)

CA

D. M. (pessoa física)

CA

D. R. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

GB

8522138 · 09/06/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/04/1989

RPI 963

Publicação do pedido de patente

#3.1

05/05/1987

RPI 863

Pedido de patente depositado

#2.1

03/17/1987

RPI 856

Anuidade - prazo legal encerrado

#18.2

10/03/1995

RPI 1296

Concessão da patente

#16.1

01/26/1993

RPI 1156

Notificação para pagamento de retribuição

#13.1

10/20/1992

RPI 1142

Deferimento

#9.1

05/26/1992

RPI 1121

Exigência - art. 36 da LPI

#6.1

10/29/1991

RPI 1091

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