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Official data from INPI

APARELHO PARA MEDICAO DE PARAMETROS DE FORMACAO EM TORNO DE FURO DE SONDAGEM,PROCESSO PARA REDUCAO DA INTERFERENCIA E PARA MELHORAR SINAL ELETROMAGNETICO RECEBIDO EM FURO DE SONDAGEM E APARELHO DE REGISTRO ELETROMAGNETICO

ArquivadaInvention Patent

Application data

Number

PI8402995

Type

Invention Patent

Filing

06/27/1983

Publication

05/28/1985

Progress at the INPI

  1. Filing06/27/83
  2. Publication05/28/85
  3. Abandoned03/24/87
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 03/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NL INDUSTRIES INC [US]

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Inventors

G. E. (pessoa física)

M. A. (pessoa física)

T. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

03/28/1989

RPI 962

Exigência - art. 36 da LPI

#6.1

08/30/1988

RPI 932

Solicitação de exame técnico

#4.1

03/24/1987

RPI 857

Publicação do pedido de patente

#3.1

05/28/1985

RPI 762

Pedido de patente depositado

#2.1

08/21/1984

RPI 722

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