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Official data from INPI

PROCESSO PARA AUMENTAR A VISCOSIDADE DE SOLUCAO DE SALMOURA E SALMOURA CONTENDO QUANTIDADE CRESCENTE DE VISCOSIDADE

ArquivadaInvention Patent

Application data

Number

PI8207175

Type

Invention Patent

Filing

12/14/1981

Publication

10/11/1983

Progress at the INPI

  1. Filing12/14/81
  2. Publication10/11/83
  3. Abandoned01/24/84
  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: 09/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NL INDUSTRIES INC [US]

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Inventors

R. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

09/13/1988

RPI 934

Exigência - art. 36 da LPI

#6.1

03/29/1988

RPI 910

Conhecimento de parecer técnico

#7.1

04/30/1985

RPI 758

Solicitação de exame técnico

#4.1

01/24/1984

RPI 692

Publicação do pedido de patente

#3.1

10/11/1983

RPI 677

Pedido de patente depositado

#2.1

02/01/1983

RPI 641

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