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Official data from INPI

PROCESSO PARA PRODUCAO DE UMA CHAPA DE ACO LAMINADA A FRIO,DE ALTA TENSAO,DE DUAS FASES TENDO EXCELENTE PROCESSABILIDADE

ConcedidaInvention Patent
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Application data

Number

PI8007714

Type

Invention Patent

Filing

11/27/1979

Publication

-
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Progress at the INPI

  1. Filing11/27/79
  2. Publication
  3. Examination
  4. Allowance10/27/87
  5. Grant05/31/88
  6. Expired12/26/95

The letters patent expired on 12/26/1995: 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. C. (pessoa física)

JP

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Inventors

O. A. (pessoa física)

T. Y. (pessoa física)

Technical data

IPC Classification

C21D 8/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

10/27/1987

RPI 888

Exigência - art. 36 da LPI

#6.1

03/04/1987

RPI 854

Conhecimento de parecer técnico

#7.1

06/11/1985

RPI 764

Exigência - art. 36 da LPI

#6.1

08/21/1984

RPI 722

6.2

02/07/1984

RPI 694

Carta-patente expirada

#21.1

12/26/1995

RPI 1308

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