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Official data from INPI

PROCESSO PARA A REDUÇÃO DE MINÉRIOS DE FERRO OXÍDICOS

Em ExigênciaInvention Patent
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Application data

Number

PI8404471

Type

Invention Patent

Filing

09/06/1984

Publication

07/30/1985
View on INPI

Progress at the INPI

  1. Filing09/06/84
  2. Publication07/30/85
  3. Examination08/18/87
  4. Allowance01/22/91
  5. Grant08/27/91
  6. Terminated09/12/95

The patent was granted on 08/27/1991 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

F. H. (pessoa física)

M. A. (pessoa física)

DE

Inventors

D. U. (pessoa física)

DE

W. J. (pessoa física)

DE

Technical data

IPC Classification

C21B 13/02

Priority claims

DE

P 33 32 556.1 · 09/09/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

11/14/1989

RPI 995

6.2

07/26/1988

RPI 927

Solicitação de exame técnico

#4.1

08/18/1987

RPI 878

Publicação do pedido de patente

#3.1

07/30/1985

RPI 771

Pedido de patente depositado

#2.1

11/13/1984

RPI 734

Anuidade - prazo legal encerrado

#18.2

09/12/1995

RPI 1293

Concessão da patente

#16.1

08/27/1991

RPI 1082

Republicação - classificação IPC

#15.11

07/09/1991

RPI 1075

Notificação para pagamento de retribuição

#13.1

05/14/1991

RPI 1067

Deferimento

#9.1

01/22/1991

RPI 1051

14.1

08/28/1990

RPI 1030

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