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Official data from INPI

PROCESSO PARA A EXTRAÇÃO EM DUAS FASES DE ÍONS DE METAL COM EMPREGO DE ÁCIDOS HIDROXÂMICOS

Arquivada/ExtintaInvention PatentPCT · EP1990000734

Application data

Number

PI9007361

Type

Invention Patent

Filing

05/07/1990

Publication

04/28/1992

PCT

EP1990000734

Progress at the INPI

  1. Filing05/07/90
  2. Publication04/28/92
  3. Examination03/16/93
  4. Allowance09/16/97
  5. Grant09/29/98
  6. Expired01/15/13

The letters patent expired on 01/15/2013: 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: 01/15/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. A. (pessoa física)

DE

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Inventors

D. K. (pessoa física)

DE

D. S. (pessoa física)

DE

Technical data

Priority claims

DE

P 39 15 586.2 · 05/12/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 07/05/2010

01/15/2013

RPI 2193

Concessão da patente

#16.1

09/29/1998

RPI 1449

Deferimento

#9.1

09/16/1997

RPI 1398

Exigência - art. 36 da LPI

#6.1

12/24/1996

RPI 1360

Solicitação de exame técnico

#4.1

03/16/1993

RPI 1163

Notificação de entrada na fase nacional - PCT

#1.3

04/28/1992

RPI 1117

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