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Official data from INPI

PROCESSO PARA PRODUZIR UMA TIRA DE ACO LAMINADA A FRIO COM ESTIRAMENTO PROFUNDO, MEDIANTE RECOZIMENTO CONTINUO DE TEMPO CURTO

ConcedidaInvention Patent

Application data

Number

PI8000642

Type

Invention Patent

Filing

02/02/1979

Publication

-

Progress at the INPI

  1. Filing02/02/79
  2. Publication
  3. Examination
  4. Allowance11/08/88
  5. Grant07/25/89
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NIPPON STEEL CORP

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Inventors

H. H. (pessoa física)

I. Y. (pessoa física)

M. A. (pessoa física)

M. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Notificação para pagamento de retribuição

#13.1

02/28/1989

RPI 958

Deferimento

#9.1

11/08/1988

RPI 942

Exigência - art. 36 da LPI

#6.1

05/10/1988

RPI 916

Exigência - art. 36 da LPI

#6.1

09/29/1987

RPI 884

Exigência - art. 36 da LPI

#6.1

02/28/1984

RPI 697

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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