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Official data from INPI

PROCESSO DE UTILIZAÇÃO DE CARVÃO MINERAL NA PRODUÇÃO DE PELOTAS DE MINÉRIO DE FERRO

DeferidaInvention Patent

Application data

Number

PI8403656

Type

Invention Patent

Filing

07/23/1984

Publication

03/11/1986

Progress at the INPI

  1. Filing07/23/84
  2. Publication03/11/86
  3. Examination08/12/86
  4. Allowance09/19/89
  5. Grant05/29/90
  6. Expired07/08/08

The letters patent expired on 07/08/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/19/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. D. (pessoa física)

MG, BR

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Inventors

L. S. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

09/19/1989

RPI 987

Exigência - art. 36 da LPI

#6.1

05/02/1989

RPI 967

Solicitação de exame técnico

#4.1

08/12/1986

RPI 825

Publicação do pedido de patente

#3.1

03/11/1986

RPI 803

Pedido de patente depositado

#2.1

09/17/1985

RPI 778

Carta-patente expirada

#21.1

Patente extinta em 23/07/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

05/29/1990

RPI 1020

Notificação para pagamento de retribuição

#13.1

01/16/1990

RPI 1002

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