Official data from INPI

PROCESSO PARA A PRODUCAO DE LIGAS DE NIQUEL

ConcedidaInvention Patent

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Application data

Number

PI7804895

Type

Invention Patent

Filing

10/29/1977

Publication

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Progress at the INPI

Filing10/29/77
Publication
Examination
Allowance05/31/83
Grant11/29/83
Expired12/14/93

The letters patent expired on 12/14/1993: 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: 11/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

L. M. (pessoa física)

M. E. (pessoa física)

Inventors

H. J. (pessoa física)

P. D. (pessoa física)

Technical data

IPC Classification

C22C 38/08 C22C 38/40

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/31/1983

RPI 658

15.0

06/01/1982

RPI 606

Exigência - art. 36 da LPI

#6.1

04/27/1982

RPI 601

6.2

12/15/1981

RPI 582

Carta-patente expirada

#21.1

12/14/1993

RPI 1202

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