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Official data from INPI

PROCESSO PARA TESTAR VAZAMENTOS EM TUBULAÇÕES E JUNTAS DE TUBOS E FERRAMENTA PARA REALIZAÇÃO DO PROCESSO.

Em AnáliseInvention Patent

Application data

Number

PI8005077

Type

Invention Patent

Filing

08/13/1980

Publication

-

Progress at the INPI

  1. Filing08/13/80
  2. Publication
  3. Examination06/14/83
  4. Allowance06/05/84
  5. Grant12/26/84
  6. Terminated09/26/89

The patent was granted on 12/26/1984 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Boc-Nowsco Limited. e Drexel Oilfield Services Limited.

Inventors

A. R. (pessoa física)

M. J. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

79.28076 · 08/13/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

20.7

01/21/1987

RPI 848

20.4

01/13/1987

RPI 847

Concessão da patente

#16.1

12/26/1984

RPI 740

Notificação para pagamento de retribuição

#13.1

10/02/1984

RPI 728

Deferimento

#9.1

06/05/1984

RPI 711

Exigência - art. 36 da LPI

#6.1

12/13/1983

RPI 686

Solicitação de exame técnico

#4.1

06/14/1983

RPI 660

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