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Official data from INPI

PROCESSO E DISPOSITIVO DE ENSAIO DE SONDAS DE DIAGRAFIA ELETRICA

ConcedidaInvention Patent

Application data

Number

PI7807111

Type

Invention Patent

Filing

10/28/1977

Publication

-

Progress at the INPI

  1. Filing10/28/77
  2. Publication
  3. Examination
  4. Allowance05/18/82
  5. Grant11/30/82
  6. Terminated09/18/90

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.

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Latest action published by the INPI: 11/30/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PETROLEUM RES & DEV CORP

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Inventors

B. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/18/1982

RPI 604

Exigência - art. 36 da LPI

#6.1

01/12/1982

RPI 586

Anuidade - prazo legal encerrado

#18.2

09/18/1990

RPI 1033

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