Official data from INPI

PROCESSO PARA PRODUÇÃO DE FERRO GUSA A PARTIR DE CONCENTRADO DE MINÉRIO DE FERRO

DeferidaInvention Patent

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Application data

Number

PI8405819

Type

Invention Patent

Filing

02/24/1984

Publication

02/20/1985

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Progress at the INPI

Filing02/24/84
Publication02/20/85
Examination06/16/87
Allowance11/14/89
Grant06/26/90
Terminated09/12/95

The patent was granted on 06/26/1990 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: 11/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IPS Interproject Service Ab.

Inventors

C. A. (pessoa física)

K. T. (pessoa física)

Technical data

IPC Classification

C10J 3/08 C21B 11/00

Priority claims

8301159-3 · 03/02/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

11/14/1989

RPI 995

Solicitação de exame técnico

#4.1

06/16/1987

RPI 869

Notificação de entrada na fase nacional - PCT

#1.3

02/20/1985

RPI 748

Anuidade - prazo legal encerrado

#18.2

09/12/1995

RPI 1293

Concessão da patente

#16.1

06/26/1990

RPI 1024

Notificação para pagamento de retribuição

#13.1

03/20/1990

RPI 1010

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