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Official data from INPI

APARELHO E PROCESSO PARA INVESTIGACAO DE POCOS;REGISTROS SINTETICOS E SISMOGRAMAS COM ANGULO REFLETOR EXTRAPOLADO A PARTIR DE MENSURACOES DO REGISTRADOR

Em AnáliseInvention Patent

Application data

Number

PI7601446

Type

Invention Patent

Filing

03/17/1975

Publication

-

Progress at the INPI

  1. Filing03/17/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Terminated01/17/89

The patent was granted 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: 01/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PETROLEUM RES & DEV CORP

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Inventors

P. S. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

01/17/1989

RPI 952

Cessão de direito de exploração

#22.1

11/06/1984

RPI 733

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