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Official data from INPI

PROCESSO PARA PRODUÇÃO DE FERRO-GUSA EM FUSÃO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905832

Type

Invention Patent

Filing

11/17/1989

Publication

05/21/1991

Progress at the INPI

  1. Filing11/17/89
  2. Publication05/21/91
  3. Examination08/13/91
  4. Allowance06/11/96
  5. Grant04/29/97
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sumitomo Metal Industries, Ltd

JP

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Inventors

H. Y. (pessoa física)

JP

H. I. (pessoa física)

JP

H. I. (pessoa física)

JP

T. Y. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

21140/1989 · 01/31/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 17/11/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

04/29/1997

RPI 1378

Deferimento

#9.1

06/11/1996

RPI 1332

Solicitação de exame técnico

#4.1

08/13/1991

RPI 1080

Publicação do pedido de patente

#3.1

05/21/1991

RPI 1068

Pedido de patente depositado

#2.1

04/17/1990

RPI 1014

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