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Official data from INPI

MÉTODO PARA AQUECIMENTO DO GÁS REDUTOR DE UM ALTO FORNO

Em AnáliseInvention Patent

Application data

Number

PI8503232

Type

Invention Patent

Filing

06/27/1985

Publication

03/25/1986

Progress at the INPI

  1. Filing06/27/85
  2. Publication03/25/86
  3. Examination08/05/86
  4. Allowance04/06/93
  5. Grant10/26/93
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Aerospatiale Societe Nationale Industrielle

FR

See this company's full portfolio

Inventors

D. P. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

84 10467 · 07/02/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.4

07/28/1987

RPI 875

Solicitação de exame técnico

#4.1

08/05/1986

RPI 824

Publicação do pedido de patente

#3.1

03/25/1986

RPI 805

Pedido de patente depositado

#2.1

09/10/1985

RPI 777

Carta-patente expirada

#21.1

Patente extinta em 27/06/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

10/26/1993

RPI 1195

Notificação para pagamento de retribuição

#13.1

07/27/1993

RPI 1182

Deferimento

#9.1

04/06/1993

RPI 1166

Exigência - art. 36 da LPI

#6.1

08/13/1991

RPI 1080

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