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Official data from INPI

COMPOSICAO DE GEL DE ARGILA ORGANOFILA E PROCESSO DE AUMENTO DE VISCOSIDADE DE UM SISTEMA ORGANICO LIQUIDO

Em AnáliseInvention Patent

Application data

Number

PI8107425

Type

Invention Patent

Filing

10/19/1981

Publication

05/24/1983

Progress at the INPI

  1. Filing10/19/81
  2. Publication05/24/83
  3. Examination01/24/84
  4. Allowance
  5. Grant
  6. In force

Published on 05/24/1983, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 04/07/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NL INDUSTRIES INC [US]

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Inventors

F. M. (pessoa física)

M. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

101

04/07/1987

RPI 859

Recurso

#12.1

06/10/1986

RPI 816

Deferimento

#9.1

02/12/1986

RPI 799

Exigência - art. 36 da LPI

#6.1

04/16/1985

RPI 756

Solicitação de exame técnico

#4.1

01/24/1984

RPI 692

Publicação do pedido de patente

#3.1

05/24/1983

RPI 657

Pedido de patente depositado

#2.1

12/29/1981

RPI 584

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