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Official data from INPI

PROCESSO PARA A PRODUCAO DE CHAPAS OU TIRAS DE ACO INOXIDAVEL FERRITICO

ConcedidaInvention Patent

Application data

Number

PI8106768

Type

Invention Patent

Filing

10/21/1980

Publication

-

Progress at the INPI

  1. Filing10/21/80
  2. Publication
  3. Examination09/14/82
  4. Allowance07/08/86
  5. Grant03/17/87
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 03/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NIPPON STEEL CORP [JP]

Inventors

H. J. (pessoa física)

I. M. (pessoa física)

S. T. (pessoa física)

Y. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/17/1987

RPI 856

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

05/28/1985

RPI 762

6.2

11/27/1984

RPI 736

Solicitação de exame técnico

#4.1

09/14/1982

RPI 621

Pedido de patente depositado

#2.1

12/01/1981

RPI 580

Carta-patente expirada

#21.1

Patente extinta em 20/10/96

08/19/2008

RPI 1963

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