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Official data from INPI

APARELHO DE ACABAMENTO DE POCO E PROCESSO DE VEDACAO ENTRE UM REVESTIMENTO E UMA COLUNA DE POCO

Em AnáliseInvention Patent

Application data

Number

PI7708637

Type

Invention Patent

Filing

12/27/1976

Publication

-

Progress at the INPI

  1. Filing12/27/76
  2. Publication
  3. Examination
  4. Allowance11/03/81
  5. Grant09/08/82
  6. Terminated08/28/90

The patent was granted on 09/08/1982 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: 07/26/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. T. (pessoa física)

Inventors

M. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

07/26/1983

RPI 666

Concessão da patente

#16.1

09/08/1982

RPI 620

Notificação para pagamento de retribuição

#13.1

03/02/1982

RPI 593

Deferimento

#9.1

11/03/1981

RPI 576

Anuidade - prazo legal encerrado

#18.2

08/28/1990

RPI 1030

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