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Official data from INPI

PROCESSO PARA CONTINUAMENTE PASSIVAR,UM METAL EM PARTICULAS E PARTICULAS DE FERRO EM ESPONJA AQUECIDOS,PRODUTO COMPATADO DE FERRO METALIZADO PASSIVADO E APARELHO PARA CONTINUAMENTE PASSIVAR MATERIAL AQUECIDO DE METAL RELATIVO EM PARTICULAS

Em AnáliseInvention Patent

Application data

Number

PI7603290

Type

Invention Patent

Filing

06/05/1975

Publication

-

Progress at the INPI

  1. Filing06/05/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/27/82
  6. Terminated10/23/90

The patent was granted on 07/27/1982 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: 09/23/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MIDREX CORP

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Inventors

P. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

09/23/1986

RPI 831

Concessão da patente

#16.1

07/27/1982

RPI 614

Notificação para pagamento de retribuição

#13.1

11/10/1981

RPI 577

Anuidade - prazo legal encerrado

#18.2

10/23/1990

RPI 1038

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