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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8402164

Type

Invention Patent

Filing

05/08/1984

Publication

12/18/1984

Progress at the INPI

  1. Filing05/08/84
  2. Publication12/18/84
  3. Examination06/11/85
  4. Allowance09/23/86
  5. Grant03/31/87
  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.

Talk to a specialist

Latest action published by the INPI: 03/31/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Union Siderurgique Du Nord Et De L Est De La France_ Usinor.

FR

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Inventors

B. J. (pessoa física)

C. F. (pessoa física)

L. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/31/1987

RPI 858

Notificação para pagamento de retribuição

#13.1

02/17/1987

RPI 852

Deferimento

#9.1

09/23/1986

RPI 831

Solicitação de exame técnico

#4.1

06/11/1985

RPI 764

Publicação do pedido de patente

#3.1

12/18/1984

RPI 739

Pedido de patente depositado

#2.1

07/17/1984

RPI 717

Carta-patente expirada

#21.1

Patente extinta em 08/05/99

07/08/2008

RPI 1957

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