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Official data from INPI

PROCESSO E DISPOSITIVO PARA A PRODUÇÃO DE PARTÍCULAS DE ESPONJA DE FERRO E FERRO-GUSA LÍQUIDO

Em AnáliseInvention Patent

Application data

Number

PI8600497

Type

Invention Patent

Filing

02/05/1986

Publication

10/21/1986

Progress at the INPI

  1. Filing02/05/86
  2. Publication10/21/86
  3. Examination06/23/87
  4. Allowance08/10/93
  5. Grant02/16/94
  6. Expired07/22/08

The letters patent expired on 07/22/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/23/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Deutsche Voest-Alpine Industrieanlagenbau GmbH

DE

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Inventors

B. V. (pessoa física)

DE

Technical data

Priority claims

DE

P 35 04 346.6 · 02/06/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/23/1987

RPI 870

Publicação do pedido de patente

#3.1

10/21/1986

RPI 835

Pedido de patente depositado

#2.1

07/29/1986

RPI 823

Carta-patente expirada

#21.1

Patente extinta em 05/02/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

02/16/1994

RPI 1211

Deferimento

#9.1

08/10/1993

RPI 1184

14.4

05/26/1992

RPI 1121

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