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Official data from INPI

APERFEICOAMENTO NAS CABECAS DE POCOS DE PRODUCAO PARA POCOS PETROLIFEROS

Em AnáliseInvention Patent

Application data

Number

PI7806331

Type

Invention Patent

Filing

09/29/1977

Publication

-

Progress at the INPI

  1. Filing09/29/77
  2. Publication
  3. Examination
  4. Allowance07/13/82
  5. Grant01/25/83
  6. Terminated06/14/88

The patent was granted on 01/25/1983 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. F. (pessoa física)

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Inventors

B. J. (pessoa física)

G. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

01/25/1983

RPI 640

Notificação para pagamento de retribuição

#13.1

11/30/1982

RPI 632

Deferimento

#9.1

07/13/1982

RPI 612

6.2

01/05/1982

RPI 585

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