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Official data from INPI

CINTA DE CONTENÇÃO E PREVENÇÃO DE TRINCAS EM ALTOS FORNOS

ConcedidaInvention Patent
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Application data

Number

PI8103332

Type

Invention Patent

Filing

05/28/1981

Publication

01/04/1983
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Progress at the INPI

  1. Filing05/28/81
  2. Publication01/04/83
  3. Examination02/21/84
  4. Allowance01/10/89
  5. Grant08/29/89
  6. Terminated08/13/96

The patent was granted on 08/29/1989 and later terminated. Protection ended before the full term and the technology is in the public domain in Brazil.

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Latest action published by the INPI: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

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Inventors

P. J. (pessoa física)

BR

Technical data

IPC Classification

C21B 7/00F27B 1/12

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

05/30/1989

RPI 971

Deferimento

#9.1

01/10/1989

RPI 951

Exigência - art. 36 da LPI

#6.1

06/28/1988

RPI 923

Exigência - art. 36 da LPI

#6.1

12/03/1985

RPI 789

Exigência - art. 36 da LPI

#6.1

12/18/1984

RPI 739

Solicitação de exame técnico

#4.1

02/21/1984

RPI 696

Publicação do pedido de patente

#3.1

01/04/1983

RPI 637

10.3

09/10/1996

RPI 1345

15.7

09/10/1996

RPI 1345

10.1

08/13/1996

RPI 1341

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