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Official data from INPI

PROCESSO PARA ESTABILIZACAO DE UMA CAMADA DE ALUMINIO METALICO EM UMA CELULA ELETROLITICA DE ALUMINIO

Em AnáliseInvention Patent
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Application data

Number

PI8002013

Type

Invention Patent

Filing

04/02/1979

Publication

-
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Progress at the INPI

  1. Filing04/02/79
  2. Publication
  3. Examination09/21/82
  4. Allowance07/30/85
  5. Grant03/17/87
  6. Terminated09/26/89

The patent was granted on 03/17/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. I. (pessoa física)

Inventors

Y. A. (pessoa física)

Technical data

IPC Classification

C25B 9/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Concessão da patente

#16.1

03/17/1987

RPI 856

14.1

06/03/1986

RPI 815

14.7

05/27/1986

RPI 814

Deferimento

#9.1

07/30/1985

RPI 771

Exigência - art. 36 da LPI

#6.1

11/20/1984

RPI 735

Republicação - classificação IPC

#15.11

03/07/1984

RPI 698

Exigência - art. 36 da LPI

#6.1

12/27/1983

RPI 688

Solicitação de exame técnico

#4.1

09/21/1982

RPI 622

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