Official data from INPI

PROCESSO PARA REDUZIR UM MINÉRIO DE FERRO EM PARTÍCULAS PARA FERRO ESPONJA EM UM REATOR DE LEITO MÓVEL DE CUBA VERTICAL.

Em AnáliseInvention Patent

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Application data

Number

PI8005801

Type

Invention Patent

Filing

09/11/1980

Publication

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Progress at the INPI

Filing09/11/80
Publication
Examination
Allowance02/21/84
Grant09/25/84
Terminated05/17/88

The patent was granted on 09/25/1984 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: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Grupo Industrial Alfa, S.A.

Grupo Industriale Ercole Marelli SpA

Inventors

M. E. (pessoa física)

P. J. (pessoa física)

Technical data

IPC Classification

C21B 13/02

Priority claims

89.902 · 10/31/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

16.3

12/26/1984

RPI 740

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/21/1984

RPI 696

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