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Official data from INPI

PROCESSO DE PRODUÇÃO DE FERRO ESPONJA A PARTIR DE PELOTA CRUA COMPOSTA DE MINÉRIO DE FERRO E DE CARVÃO VEGETA.

Em ExigênciaInvention Patent
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Application data

Number

PI8301613

Type

Invention Patent

Filing

03/11/1983

Publication

10/23/1984
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Progress at the INPI

  1. Filing03/11/83
  2. Publication10/23/84
  3. Examination02/12/85
  4. Allowance11/05/91
  5. Grant08/25/92
  6. Terminated12/17/96

The patent was granted on 08/25/1992 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: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Fundação Centro Tecnológico de Minas Gerais/Cetec

MG, BR

J. M. (pessoa física)

MG, BR

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Inventors

J. M. (pessoa física)

BR

Technical data

IPC Classification

C21B 13/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

04/26/1988

RPI 914

Solicitação de exame técnico

#4.1

02/12/1985

RPI 747

Publicação antecipada

#3.2

10/23/1984

RPI 731

Pedido de patente depositado

#2.1

10/16/1984

RPI 730

Anuidade - prazo legal encerrado

#18.2

12/17/1996

RPI 1359

Concessão da patente

#16.1

08/25/1992

RPI 1134

Notificação para pagamento de retribuição

#13.1

03/17/1992

RPI 1111

Deferimento

#9.1

11/05/1991

RPI 1092

Exigência - art. 36 da LPI

#6.1

05/21/1991

RPI 1068

14.1

03/19/1991

RPI 1059

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