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Official data from INPI

PROCESSO DE EXTRAÇÃO DE MATÉRIA ORGÂNICA DE MATRIZES SÓLIDAS

ConcedidaInvention Patent

Application data

Number

PI8305214

Type

Invention Patent

Filing

09/23/1983

Publication

04/30/1985

Progress at the INPI

  1. Filing09/23/83
  2. Publication04/30/85
  3. Examination08/06/85
  4. Allowance04/18/89
  5. Grant11/28/89
  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.

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Latest action published by the INPI: 11/28/1989. 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

I. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

08/15/1989

RPI 982

Deferimento

#9.1

04/18/1989

RPI 965

Solicitação de exame técnico

#4.1

08/06/1985

RPI 772

Publicação do pedido de patente

#3.1

04/30/1985

RPI 758

Pedido de patente depositado

#2.1

11/29/1983

RPI 684

Carta-patente expirada

#21.1

Patente extinta em 23/09/98

07/01/2008

RPI 1956

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