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Official data from INPI

PROCESSO PARA OBTENCAO DE LIGAS DE ACOS ESPECIAIS

ConcedidaInvention Patent
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Application data

Number

PI7905608

Type

Invention Patent

Filing

08/31/1979

Publication

-
View on INPI

Progress at the INPI

  1. Filing08/31/79
  2. Publication
  3. Examination05/17/83
  4. Allowance12/16/86
  5. Grant08/25/87
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

VICCINO E

Inventors

V. E. (pessoa física)

Technical data

IPC Classification

C21C 5/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Notificação para pagamento de retribuição

#13.1

05/05/1987

RPI 863

Deferimento

#9.1

12/16/1986

RPI 843

Exigência - art. 36 da LPI

#6.1

05/13/1986

RPI 812

6.3

07/31/1984

RPI 719

Conhecimento de parecer técnico

#7.1

07/31/1984

RPI 719

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

Solicitação de exame técnico

#4.1

05/17/1983

RPI 656

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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