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Official data from INPI

PROCESSO INTEGRADO PARA A PREPARAÇÃO DE GAMA - ALUMINA

ConcedidaInvention Patent

Application data

Number

PI8305990

Type

Invention Patent

Filing

10/31/1983

Publication

06/04/1985

Progress at the INPI

  1. Filing10/31/83
  2. Publication06/04/85
  3. Examination08/13/85
  4. Allowance11/29/88
  5. Grant08/29/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

C. F. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

11/29/1988

RPI 945

Exigência - art. 36 da LPI

#6.1

06/21/1988

RPI 922

Solicitação de exame técnico

#4.1

08/13/1985

RPI 773

Publicação do pedido de patente

#3.1

06/04/1985

RPI 763

Pedido de patente depositado

#2.1

01/17/1984

RPI 691

Carta-patente expirada

#21.1

Patente extinta em 31/10/98

07/01/2008

RPI 1956

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