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Official data from INPI

PROCESSO DE SEPARAÇÃO DE TERRAS RARAS POR EXTRAÇÃO LÍQUIDO-LÍQUIDO

PublicadaInvention Patent

Application data

Number

PI8803441

Type

Invention Patent

Filing

07/08/1988

Publication

01/31/1989

Progress at the INPI

  1. Filing07/08/88
  2. Publication01/31/89
  3. Examination05/21/91
  4. Allowance
  5. Grant
  6. In force

Published on 01/31/1989, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 01/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. B. (pessoa física)

FR

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Inventors

A. L. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

87 09796 · 07/10/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/31/1989

RPI 954

Pedido de patente depositado

#2.1

12/13/1988

RPI 947

Retificação

#15.3

06/07/1994

RPI 1227

Solicitação de exame técnico

#4.1

05/21/1991

RPI 1068

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