Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI7908943

Type

Invention Patent

Filing

12/06/1979

Publication

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Progress at the INPI

Filing12/06/79
Publication
Examination05/25/82
Allowance05/15/84
Grant11/27/84
Terminated04/26/94

The patent was granted on 11/27/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Societe Française D" Electrometallurgie "SOFREM'

Inventors

D. M. (pessoa física)

S. L. (pessoa física)

Technical data

IPC Classification

C21C 7/072 C22C 22/00 C22C 35/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/15/1984

RPI 708

Exigência - art. 36 da LPI

#6.1

11/01/1983

RPI 680

Solicitação de exame técnico

#4.1

05/25/1982

RPI 605

Anuidade - prazo legal encerrado

#18.2

04/26/1994

RPI 1221

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