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Official data from INPI

COMPOSIÇÃO E APERFEIÇOAMENTO EM UM PROCESSO PARA INIBIÇÃO DE INCRUSTAÇÃO PARA DIGESTORES "KRAFT" DE USINAS DE POLPA.

Prazo de SigiloInvention Patent
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Application data

Number

PI8900062

Type

Invention Patent

Filing

01/09/1989

Publication

08/14/1990
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Progress at the INPI

  1. Filing01/09/89
  2. Publication08/14/90
  3. Abandoned02/09/93
  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: 02/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

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Inventors

D. C. (pessoa física)

US

L. C. (pessoa física)

T. H. (pessoa física)

Technical data

IPC Classification

C11D 10/02C11D 1/66C11D 3/36

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

02/21/1989

RPI 957

Arquivamento - Art. 36 §1° da LPI

#11.2

10/15/1996

RPI 1350

Exigência - art. 36 da LPI

#6.1

01/16/1996

RPI 1311

Exigência - art. 36 da LPI

#6.1

06/27/1995

RPI 1282

Exigência - art. 36 da LPI

#6.1

09/27/1994

RPI 1243

Solicitação de exame técnico

#4.1

02/09/1993

RPI 1158

Publicação do pedido de patente

#3.1

08/14/1990

RPI 1028

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