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Official data from INPI

APARELHO E PROCESSO PARA TRATAMENTO DE MATERIAL EM PARTICULAS

Em AnáliseInvention Patent

Application data

Number

PI7901186

Type

Invention Patent

Filing

03/06/1978

Publication

-

Progress at the INPI

  1. Filing03/06/78
  2. Publication
  3. Examination
  4. Allowance08/06/85
  5. Grant03/25/86
  6. Terminated05/17/88

The patent was granted on 03/25/1986 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: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MIDREX CORP

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Inventors

E. R. (pessoa física)

T. W. (pessoa física)

W. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

Pedido de licença compulsória

#20.1

11/04/1986

RPI 837

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

12/10/1985

RPI 790

Deferimento

#9.1

08/06/1985

RPI 772

Exigência - art. 36 da LPI

#6.1

01/10/1984

RPI 690

6.2

01/26/1982

RPI 588

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