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Official data from INPI

APARELHO PARA USO EM UM CONDUTO E VEDADOR DE POCOS E PROCESSO DE USAR UM VEDADOR EM UM POCO

Em AnáliseInvention Patent

Application data

Number

PI7708364

Type

Invention Patent

Filing

12/15/1976

Publication

-

Progress at the INPI

  1. Filing12/15/76
  2. Publication
  3. Examination
  4. Allowance04/27/82
  5. Grant11/30/82
  6. Terminated08/28/90

The patent was granted on 11/30/1982 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: 11/01/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. T. (pessoa física)

Inventors

B. J. (pessoa física)

C. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

11/01/1983

RPI 680

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

08/31/1982

RPI 619

Deferimento

#9.1

04/27/1982

RPI 601

6.2

10/27/1981

RPI 575

Anuidade - prazo legal encerrado

#18.2

08/28/1990

RPI 1030

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