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Official data from INPI

APARELHO E PROCESSO PARA REDUZIR OXIDO DE FERRO EM PARTICULAS ATE FERRO EM FUSAO COM UM REDUTOR SOLIDO

Em AnáliseInvention Patent

Application data

Number

PI7901905

Type

Invention Patent

Filing

04/03/1978

Publication

-

Progress at the INPI

  1. Filing04/03/78
  2. Publication
  3. Examination
  4. Allowance07/19/83
  5. Grant01/31/84
  6. Terminated10/03/89

The patent was granted on 01/31/1984 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MIDREX CORP

See this company's full portfolio

Inventors

B. D. (pessoa física)

M. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Pedido de licença compulsória

#20.1

09/23/1986

RPI 831

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

11/16/1983

RPI 682

Deferimento

#9.1

07/19/1983

RPI 665

Exigência - art. 36 da LPI

#6.1

10/13/1982

RPI 625

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