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Official data from INPI

MÉTODO PARA A PRODUÇÃO DE PRÉ-PRODUTOS DE FERRO-GUSA OU AÇO EM FUSÃO A PARTIR DE MATERIAL FERROSO PARTICULADO

Em AnáliseInvention Patent

Application data

Number

PI8601242

Type

Invention Patent

Filing

03/20/1986

Publication

12/02/1986

Progress at the INPI

  1. Filing03/20/86
  2. Publication12/02/86
  3. Examination08/30/88
  4. Allowance05/11/93
  5. Grant09/28/93
  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: 08/30/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Deutsche Voest-Alpine Industrieanlagenbau GmbH

DE

Voest-Alpine Industrieanlagenbau Gesellschaft M.b.H

AT

See this company's full portfolio

Inventors

D. H. (pessoa física)

DE

D. K. (pessoa física)

AT

Technical data

IPC Classification

Priority claims

AT

A 846/85 · 03/21/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/30/1988

RPI 932

Publicação do pedido de patente

#3.1

12/02/1986

RPI 841

Pedido de patente depositado

#2.1

10/21/1986

RPI 835

Carta-patente expirada

#21.1

Patente extinta em 20/03/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

09/28/1993

RPI 1191

Deferimento

#9.1

05/11/1993

RPI 1171

14.4

03/24/1992

RPI 1112

14.1

03/17/1992

RPI 1111

14.3

11/12/1991

RPI 1093

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