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Official data from INPI

COMPOSICAO LIGANTE PARA MINERIOS OU MATERIAL METALIZADO EM PARTICULAS;BRIQUETE DE FERRO METALIZADO;PROCESSO PARA A FABRICACAO DE BRIQUETE;E PROCESSO PARA A RECUPERACAO DE SUBSTANCIALMENTE TODAS AS PARTICULAS FINAS DA OPERACAO DE UM FORNO DE REDUCAO DIRETA

Em AnáliseInvention Patent

Application data

Number

PI7702732

Type

Invention Patent

Filing

05/03/1976

Publication

-

Progress at the INPI

  1. Filing05/03/76
  2. Publication
  3. Examination
  4. Allowance03/02/82
  5. Grant
  6. Terminated05/10/88

The patent was granted 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: 05/10/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MIDREX CORP

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/10/1988

RPI 916

Pedido de licença compulsória

#20.1

09/23/1986

RPI 831

Notificação para pagamento de retribuição

#13.1

06/22/1982

RPI 609

Deferimento

#9.1

03/02/1982

RPI 593

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