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Official data from INPI

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

ArquivadaInvention Patent

Application data

Number

PI9402964

Type

Invention Patent

Filing

07/27/1994

Publication

04/11/1995

Progress at the INPI

  1. Filing07/27/94
  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

08/097.695 · 07/27/1993

Abstract

Processo para branquear fibra a partir de papel usado colorido compreendendo branquear a polpa a partir do papel usado colorido com hidrossulfito de sódio, ácido sulfínico de formamidina, ou peróxido de hidrogênio na presença de um composto quaternário selecionado.

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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