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Official data from INPI

PROCESSO DE RECUPARAÇÀO DE RESÍDUOS DE ORIGEM SIDERÚRGICA

ConcedidaInvention Patent

Application data

Number

PI8100784

Type

Invention Patent

Filing

02/09/1981

Publication

10/05/1982

Progress at the INPI

  1. Filing02/09/81
  2. Publication10/05/82
  3. Examination11/29/83
  4. Allowance05/12/87
  5. Grant09/27/88
  6. Terminated02/04/92

The patent was granted on 09/27/1988 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: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A - USIMINAS

MG, BR

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Inventors

E. S. (pessoa física)

J. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1988

RPI 936

Notificação para pagamento de retribuição

#13.1

05/17/1988

RPI 917

15.19

12/08/1987

RPI 894

Retificação

#15.3

10/06/1987

RPI 885

Deferimento

#9.1

05/12/1987

RPI 864

Exigência - art. 36 da LPI

#6.1

02/18/1986

RPI 800

Exigência - art. 36 da LPI

#6.1

09/18/1984

RPI 726

Solicitação de exame técnico

#4.1

11/29/1983

RPI 684

Solicitação de exame não realizada

#4.2

07/19/1983

RPI 665

Publicação do pedido de patente

#3.1

10/05/1982

RPI 624

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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