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Official data from INPI

PROCESSO DE EXTRAÇÃO DE OURO A PARTIR DE MATERIAIS SÓLIDOS QUE O CONTÊM

Prazo de SigiloInvention Patent

Application data

Number

PI8902117

Type

Invention Patent

Filing

05/05/1989

Publication

01/02/1990

Progress at the INPI

  1. Filing05/05/89
  2. Publication01/02/90
  3. Examination02/18/92
  4. Allowance09/17/96
  5. Grant05/27/97
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 06/13/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Interox Chemicals Limited

GB

Inventors

A. M. (pessoa física)

GB

D. M. (pessoa física)

GB

S. B. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8810736.2 · 05/06/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

06/13/1989

RPI 973

Carta-patente expirada

#21.1

Patente extinta em 05/05/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

05/27/1997

RPI 1382

Deferimento

#9.1

09/17/1996

RPI 1346

Exigência - art. 36 da LPI

#6.1

02/06/1996

RPI 1314

Solicitação de exame técnico

#4.1

02/18/1992

RPI 1107

Publicação do pedido de patente

#3.1

01/02/1990

RPI 1000

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