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Official data from INPI

INSTALAÇÃO E PROCESSO PARA A RECUPERAÇÃO DE VALORES DE METAIS DE UMA POLPA OU SOLUÇÃO DE LIXIVIAÇÃO MEDIANTE ADSORÇÃO DE CARBONO EM POLPA OU RESINA EM POLPA

Prazo de SigiloInvention Patent
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Application data

Number

PI8901212

Type

Invention Patent

Filing

03/16/1989

Publication

10/16/1990
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Progress at the INPI

  1. Filing03/16/89
  2. Publication10/16/90
  3. Examination02/18/92
  4. Allowance02/21/96
  5. Grant10/29/96
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 05/02/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Anglo Almerican Corporation of South Africa Limited

ZA

Anglo American Corporation Of South Africa Limited

ZA

Inventors

R. W. (pessoa física)

ZA

Technical data

IPC Classification

C22B 11/00C22B 3/24

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

05/02/1989

RPI 967

Carta-patente expirada

#21.1

Patente extinta em 16/03/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

10/29/1996

RPI 1352

Republicação - classificação IPC

#15.11

10/01/1996

RPI 1348

Deferimento

#9.1

02/21/1996

RPI 1316

Solicitação de exame técnico

#4.1

02/18/1992

RPI 1107

Publicação do pedido de patente

#3.1

10/16/1990

RPI 1037

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