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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE LIGNINA E PROCESSO PARA O TRATAMENTO DE MATERIAL LIGNOCELULÓSICO

Prazo de SigiloInvention Patent

Application data

Number

PI8805568

Type

Invention Patent

Filing

10/27/1988

Publication

06/05/1990

Progress at the INPI

  1. Filing10/27/88
  2. Publication06/05/90
  3. Examination08/18/92
  4. Allowance
  5. Grant
  6. In force

Published on 06/05/1990, 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: 03/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

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Inventors

P. F. (pessoa física)

GB

P. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

03/21/1989

RPI 961

Republicação - classificação IPC

#15.11

A classificação anterior era: C07G 1/00

06/05/2012

RPI 2161

Retificação

#15.3

03/26/1996

RPI 1321

Solicitação de exame técnico

#4.1

08/18/1992

RPI 1133

Publicação do pedido de patente

#3.1

06/05/1990

RPI 1021

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