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Official data from INPI

EQUIPAMENTO E PROCESSO PARA REDUÇÃO DO TEOR DE ENXOFRE CONTIDO EM ÓXIDOS DE FERRO

Prazo de SigiloInvention Patent
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Application data

Number

PI8803896

Type

Invention Patent

Filing

08/05/1988

Publication

03/13/1990
View on INPI

Progress at the INPI

  1. Filing08/05/88
  2. Publication03/13/90
  3. Examination05/19/92
  4. Allowance
  5. Grant
  6. In force

Published on 03/13/1990, 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: 01/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. P. (pessoa física)

SC, BR

ICC - Indústria Carboquímica Catarinense S A

SC, BR

Indústria de Fundição Tupy Ltda

SC, BR

Inventors

E. M. (pessoa física)

N. J. (pessoa física)

BR

P. C. (pessoa física)

BR

Technical data

IPC Classification

C22B 1/11

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

01/03/1989

RPI 950

Retificação

#15.3

06/14/1994

RPI 1228

Solicitação de exame técnico

#4.1

05/19/1992

RPI 1120

Publicação do pedido de patente

#3.1

03/13/1990

RPI 1009

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