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Official data from INPI

APARELHO PARA INVESTIGACAO ELETRICA DE FORMACOES TERRESTRES ATRAVESSADAS POR UM FURO DE SONDAGEM

Em AnáliseInvention Patent

Application data

Number

PI8104167

Type

Invention Patent

Filing

07/24/1980

Publication

03/16/1982

Progress at the INPI

  1. Filing07/24/80
  2. Publication03/16/82
  3. Examination04/19/83
  4. Allowance04/16/85
  5. Grant10/01/85
  6. Terminated07/12/88

The patent was granted on 10/01/1985 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PRAD RES & DEV NV [NL]

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Inventors

S. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

07/12/1988

RPI 925

Concessão da patente

#16.1

10/01/1985

RPI 780

Notificação para pagamento de retribuição

#13.1

08/06/1985

RPI 772

Deferimento

#9.1

04/16/1985

RPI 756

Exigência - art. 36 da LPI

#6.1

07/03/1984

RPI 715

Solicitação de exame técnico

#4.1

04/19/1983

RPI 652

Publicação do pedido de patente

#3.1

03/16/1982

RPI 595

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