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Official data from INPI

Processo para a preparação de uma suspenção de silico - Aluminio a partir de uma solução de silicato de sódio e suspensão obtida pelo processo.

Em AnáliseInvention Patent

Application data

Number

PI8002031

Type

Invention Patent

Filing

04/01/1980

Publication

-

Progress at the INPI

  1. Filing04/01/80
  2. Publication
  3. Examination
  4. Allowance11/01/83
  5. Grant04/24/84
  6. Terminated09/26/89

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.

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Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Degremont

FR

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Inventors

B. J. (pessoa física)

Y. R. (pessoa física)

Technical data

Priority claims

FR

7908294 · 04/03/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Concessão da patente

#16.1

04/24/1984

RPI 705

Notificação para pagamento de retribuição

#13.1

02/14/1984

RPI 695

Deferimento

#9.1

11/01/1983

RPI 680

Republicação - classificação IPC

#15.11

05/24/1983

RPI 657

Exigência - art. 36 da LPI

#6.1

05/03/1983

RPI 654

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