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Official data from INPI

ACIARIA E PROCESSO PARA OPERAÇÃO DA MESMA

PublicadaInvention Patent

Application data

Number

PI8704134

Type

Invention Patent

Filing

08/11/1987

Publication

04/12/1988

Progress at the INPI

  1. Filing08/11/87
  2. Publication04/12/88
  3. Examination08/07/90
  4. Allowance12/14/93
  5. Grant06/28/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 04/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Voest-Alpine Industrieanlagenbau Gesellschaft M.b.H

AT

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Inventors

D. W. (pessoa física)

AT

E. E. (pessoa física)

AT

H. W. (pessoa física)

AT

O. P. (pessoa física)

AT

W. R. (pessoa física)

AT

W. S. (pessoa física)

AT

Technical data

IPC Classification

Priority claims

EP

86 890 229.7 · 08/12/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/12/1988

RPI 912

Pedido de patente depositado

#2.1

11/17/1987

RPI 891

Carta-patente expirada

#21.1

Patente extinta em 11/08/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/28/1994

RPI 1230

Deferimento

#9.1

12/14/1993

RPI 1202

14.1

11/12/1991

RPI 1093

Solicitação de exame técnico

#4.1

08/07/1990

RPI 1027

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