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Official data from INPI

PROCESSO PARA CLAREAR FIBRA A PARTIR DE PAPEL USADO COLORIDO E POLPA

ArquivadaInvention Patent

Application data

Number

PI9402944

Type

Invention Patent

Filing

07/26/1994

Publication

04/11/1995

Progress at the INPI

  1. Filing07/26/94
  2. Publication04/11/95
  3. Abandoned
  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.

Talk to a specialist

Latest action published by the INPI: 07/23/2002. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. C. (pessoa física)

US

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Inventors

G. H. (pessoa física)

US

P. I. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

08/097.745 · 07/27/1993

Abstract

Processo para branquear polpa contendo polpa de papel usado colorido, em que o processo compreende branquear a polpa com um agente químico de branqueamento, especialmente hidrossulfito de sódio, na presença de uma amina etoxilada selecionada.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

07/23/2002

RPI 1646

Exigência - art. 36 da LPI

#6.1

01/29/2002

RPI 1621

Publicação do pedido de patente

#3.1

04/11/1995

RPI 1271

Pedido de patente depositado

#2.1

10/04/1994

RPI 1244

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