Official data from INPI

PROCESSO BIOMETALÚRGICO

Arquivada/ExtintaInvention Patent

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Application data

Number

PI9104843

Type

Invention Patent

Filing

11/06/1991

Publication

06/23/1992

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Progress at the INPI

Filing11/06/91
Publication06/23/92
Examination06/18/96
Allowance04/30/02
Grant01/21/03
Expired06/11/13

The letters patent expired on 06/11/2013: 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: 06/11/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Billiton Chile S.A.

Leaching S.R.L.

Leaching S.R.L. And Shell Chile S.A. Comercial e Industrial

Inventors

N. P. (pessoa física)

Technical data

IPC Classification

C22B 3/06 C22B 3/18

Priority claims

318,330 · 11/07/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 21/01/2013

06/11/2013

RPI 2214

Concessão da patente

#16.1

01/21/2003

RPI 1672

Deferimento

#9.1

04/30/2002

RPI 1634

Exigência - art. 36 da LPI

#6.1

02/20/2001

RPI 1572

Transferência deferida

#25.1

11/11/1997

RPI 1406

Solicitação de exame técnico

#4.1

06/18/1996

RPI 1333

Publicação do pedido de patente

#3.1

06/23/1992

RPI 1125

Pedido de patente depositado

#2.1

12/10/1991

RPI 1097

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