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Official data from INPI

PROCESSO E SISTEMA DE EXTRACAO CONTINUA POR ALCALI E OXIGENIO PARA ALVEJAMENTO E DESLENHIFICACAO DE POLPA DE MADEIRA

Em AnáliseInvention Patent

Application data

Number

PI8501918

Type

Invention Patent

Filing

07/27/1984

Publication

05/06/1986

Progress at the INPI

Under appeal
  1. Filing07/27/84
  2. Publication05/06/86
  3. Examination08/05/86
  4. Refused01/09/90
  5. Grant
  6. In force

The application was refused by the INPI on 01/09/1990. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 01/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

INGERSOLL RAND CO [US]

Inventors

C. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

01/31/1989

RPI 954

Solicitação de exame técnico

#4.1

08/05/1986

RPI 824

Publicação do pedido de patente

#3.1

05/06/1986

RPI 811

Pedido de patente depositado

#2.1

07/02/1985

RPI 767

Indeferimento

#9.2

01/09/1990

RPI 1001

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