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Official data from INPI

PROCESSO DE PURIFICAÇÃO DE METAL EM FUSÃO E DISTRIBUIDOR

Arquivada/ExtintaInvention Patent
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Application data

Number

PI8906715

Type

Invention Patent

Filing

12/22/1989

Publication

08/21/1990
View on INPI

Progress at the INPI

  1. Filing12/22/89
  2. Publication08/21/90
  3. Examination11/26/91
  4. Allowance12/03/96
  5. Grant09/30/97
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

British Steel PLC, companhia britânica

GB

Foseco International Limited, companhia britânica

GB

Inventors

I. H. (pessoa física)

GB

N. K. (pessoa física)

GB

P. W. (pessoa física)

AU

T. R. (pessoa física)

GB

Technical data

IPC Classification

B22D 11/10B22D 11/128B22D 11/20

Priority claims

GB

8829918 · 12/22/1988

GB

8911682 · 05/20/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/12/2009

05/21/2013

RPI 2211

Concessão da patente

#16.1

09/30/1997

RPI 1400

Deferimento

#9.1

12/03/1996

RPI 1357

Exigência - art. 36 da LPI

#6.1

01/30/1996

RPI 1313

Solicitação de exame técnico

#4.1

11/26/1991

RPI 1095

Publicação do pedido de patente

#3.1

08/21/1990

RPI 1029

Pedido de patente depositado

#2.1

05/08/1990

RPI 1017

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