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Official data from INPI

MÉTODO PARA DETECÇÃO DE ARREBENTAMENTO DE TIRAS EM LINHAS CONTÍNUAS.

Em ExigênciaInvention Patent
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Application data

Number

PI8403282

Type

Invention Patent

Filing

07/03/1984

Publication

02/12/1986
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Progress at the INPI

  1. Filing07/03/84
  2. Publication02/12/86
  3. Examination08/26/86
  4. Allowance05/22/90
  5. Grant11/27/90
  6. Expired07/08/08

The letters patent expired on 07/08/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

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Inventors

M. S. (pessoa física)

BR

Technical data

IPC Classification

C23G 3/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

11/28/1989

RPI 997

Exigência - art. 36 da LPI

#6.1

07/18/1989

RPI 978

Solicitação de exame técnico

#4.1

08/26/1986

RPI 827

Publicação do pedido de patente

#3.1

02/12/1986

RPI 799

Pedido de patente depositado

#2.1

09/04/1984

RPI 724

Carta-patente expirada

#21.1

Patente extinta em 03/07/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

11/27/1990

RPI 1043

Notificação para pagamento de retribuição

#13.1

08/28/1990

RPI 1030

Deferimento

#9.1

05/22/1990

RPI 1019

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