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Official data from INPI

PROCESSO PARA A RECUPERACAO DO PETROLEO CONTIDO EM FORMACOES SUBTERRANEAS

Em AnáliseInvention Patent

Application data

Number

PI7808469

Type

Invention Patent

Filing

12/22/1977

Publication

-

Progress at the INPI

  1. Filing12/22/77
  2. Publication
  3. Examination
  4. Allowance03/16/82
  5. Grant10/19/82
  6. Terminated02/25/86

The patent was granted on 10/19/1982 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: 02/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TEXACO DEVELOPMENT CORP

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Inventors

K. M. (pessoa física)

S. V. (pessoa física)

V. J. (pessoa física)

W. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

02/25/1986

RPI 801

Cessão de direito de exploração

#22.1

04/02/1985

RPI 754

Concessão da patente

#16.1

10/19/1982

RPI 626

Notificação para pagamento de retribuição

#13.1

07/06/1982

RPI 611

Deferimento

#9.1

03/16/1982

RPI 595

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