Official data from INPI

PROCESSO DE TRATAR PIROMETALURGICAMENTE UM MATERIAL DE ALIMENTAÇÃO

Arquivada/ExtintaInvention Patent

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Application data

Number

PI9104116

Type

Invention Patent

Filing

09/25/1991

Publication

06/02/1992

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Progress at the INPI

Filing09/25/91
Publication06/02/92
Examination04/12/94
Allowance09/01/98
Grant02/23/99
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

Anglo American Platinum Corporation Limited

Johannesburg Consolidated Investment Company Limited

Inventors

J. B. (pessoa física)

K. P. (pessoa física)

K. E. (pessoa física)

Technical data

IPC Classification

C22B 1/00 C22B 5/12

Priority claims

90/7689 · 09/26/1990

91/2306 · 03/27/1991

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 25/09/2011

06/11/2013

RPI 2214

Concessão da patente

#16.1

02/23/1999

RPI 1468

Transferência deferida

#25.1

Transferido de: Johannesburg Consolidated Investment Company Limited

12/29/1998

RPI 1460

Deferimento

#9.1

09/01/1998

RPI 1445

Solicitação de exame técnico

#4.1

04/12/1994

RPI 1219

Publicação do pedido de patente

#3.1

06/02/1992

RPI 1122

Pedido de patente depositado

#2.1

10/29/1991

RPI 1091

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