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Official data from INPI

PROCESSO PARA A RECUPERAÇÃO DE ELEMENTOS DE TERRAS RARAS A PARTIR DE UMA SOLUÇÃO AQUOSA DE ÁCIDO SULFUROSO CONTENDO VALORES DE TERRAS RARAS

ArquivadaInvention Patent

Application data

Number

PI9003451

Type

Invention Patent

Filing

07/17/1990

Publication

08/27/1991

Progress at the INPI

  1. Filing07/17/90
  2. Publication08/27/91
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 07/17/1990 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/21/1994. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

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Inventors

G. F. (pessoa física)

CA

G. L. (pessoa física)

T. S. (pessoa física)

Technical data

IPC Classification

Priority claims

US

381.577 · 07/18/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

06/21/1994

RPI 1229

Publicação do pedido de patente

#3.1

08/27/1991

RPI 1082

Pedido de patente depositado

#2.1

01/22/1991

RPI 1051

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