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Official data from INPI

DISPOSITIVO GIRATORIO PARA FURO DE SONDAGEM,PROCESSO PARA DE-TERMINAR A DENSIDADE MEDIA DE AMOSTRA DE FORMACAO DE FURO DE SONDAGEM,APARELHO PARA REGISTRAR DENSIDADE DE FORMACAO DE FURO DE SONDAGEM,E DISPOSITIVO PARA USO EM FURO DE SONDAGEM

ArquivadaInvention Patent

Application data

Number

PI8306189

Type

Invention Patent

Filing

03/11/1983

Publication

11/13/1984

Progress at the INPI

  1. Filing03/11/83
  2. Publication11/13/84
  3. Abandoned10/21/86
  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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NL INDUSTRIES INC [US]

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Inventors

C. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

06/28/1988

RPI 923

Exigência - art. 36 da LPI

#6.1

11/24/1987

RPI 892

Solicitação de exame técnico

#4.1

10/21/1986

RPI 835

Publicação do pedido de patente

#3.1

11/13/1984

RPI 734

Pedido de patente depositado

#2.1

01/24/1984

RPI 692

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