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Official data from INPI

PROCESSO DE RECUPERACAO DE OLEO DE RESERVATORIOS DE OLEO SUBTERRANEOS E COMPOSICAO AQUOSA DE AGENTE TENSO-ATIVO

Em AnáliseInvention Patent

Application data

Number

PI7903621

Type

Invention Patent

Filing

09/22/1978

Publication

-

Progress at the INPI

  1. Filing09/22/78
  2. Publication
  3. Examination11/30/82
  4. Allowance07/14/87
  5. Grant12/29/87
  6. Terminated10/03/89

The patent was granted on 12/29/1987 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CIBA GEIGY AG

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Inventors

C. T. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Conhecimento de parecer técnico

#7.1

08/23/1983

RPI 670

Solicitação de exame técnico

#4.1

11/30/1982

RPI 632

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