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Official data from INPI

PROCESSO PARA REMOVER O ENXOFRE CONTIDO PELO MENOS UM COMPOSTO GASOSO MEDIANTE ABSORÇÃO DE PELO MENOS PARTE DO GÁS RESIDUAL DE UM FORNO DE CUBA DE REDUÇÃO PARA MINÉRIO DE FERRO E APARELHAGEM PARA SUA REALIZAÇÃO

PublicadaInvention Patent

Application data

Number

PI8802342

Type

Invention Patent

Filing

05/16/1988

Publication

12/13/1988

Progress at the INPI

  1. Filing05/16/88
  2. Publication12/13/88
  3. Examination02/19/91
  4. Allowance
  5. Grant
  6. In force

Published on 12/13/1988, 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: 12/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Deutsche Voest - Alpine Industrieanlagenbau GMBH

DE

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Inventors

D. H. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 37 16 511.9 · 05/16/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/13/1988

RPI 947

Pedido de patente depositado

#2.1

10/25/1988

RPI 940

Retificação

#15.3

10/03/1995

RPI 1296

Solicitação de exame técnico

#4.1

02/19/1991

RPI 1055

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