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Official data from INPI

PROCESSO E EQUIPAMENTO PARA PERFILAGEM DE POCOS COM UM SISTEMA DE ELETRODOS DUPLOS DE FOCALIZACAO E/OU UM SISTEMA DE BOBINA

Em AnáliseInvention Patent

Application data

Number

PI7900366

Type

Invention Patent

Filing

05/31/1978

Publication

-

Progress at the INPI

  1. Filing05/31/78
  2. Publication
  3. Examination
  4. Allowance03/30/82
  5. Grant
  6. Terminated06/24/86

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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PETROLEUM RES & DEV CORP

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/24/1986

RPI 818

Cessão de direito de exploração

#22.1

06/04/1985

RPI 763

Notificação para pagamento de retribuição

#13.1

07/20/1982

RPI 613

Deferimento

#9.1

03/30/1982

RPI 597

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