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Official data from INPI

PROCESSO PARA A REMOCAO DE IMPUREZAS DE UMA SOLUCAO DE ALUMINATO DE SODIO

Em AnáliseInvention Patent

Application data

Number

PI7908477

Type

Invention Patent

Filing

12/21/1978

Publication

-

Progress at the INPI

  1. Filing12/21/78
  2. Publication
  3. Examination
  4. Allowance10/11/83
  5. Grant04/24/84
  6. Terminated11/16/88

The patent was granted on 04/24/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SUMITOMO ALUMINIUM SMELTING CO

Inventors

H. T. (pessoa física)

K. H. (pessoa física)

Y. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/16/1988

RPI 943

Concessão da patente

#16.1

04/24/1984

RPI 705

Notificação para pagamento de retribuição

#13.1

01/24/1984

RPI 692

Deferimento

#9.1

10/11/1983

RPI 677

Exigência - art. 36 da LPI

#6.1

10/19/1982

RPI 626

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