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Official data from INPI

PROCESSO E DISPOSITIVO PARA A REDUÇÃO DIRETA DE MINÉRIOS DE FERRO CONTENDO ENXOFRE

Em ExigênciaInvention Patent

Application data

Number

PI8504090

Type

Invention Patent

Filing

08/27/1985

Publication

06/17/1986

Progress at the INPI

  1. Filing08/27/85
  2. Publication06/17/86
  3. Examination02/10/87
  4. Allowance01/19/93
  5. Grant07/27/93
  6. Terminated05/28/96

The patent was granted on 07/27/1993 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Deutsche Voest-Alpine Industrieanlagenbau GmbH

DE

See this company's full portfolio

Inventors

D. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 34 32 090.3 · 08/28/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

02/10/1987

RPI 851

Publicação do pedido de patente

#3.1

06/17/1986

RPI 817

Pedido de patente depositado

#2.1

10/29/1985

RPI 784

Anuidade - prazo legal encerrado

#18.2

05/28/1996

RPI 1330

Concessão da patente

#16.1

07/27/1993

RPI 1182

Notificação para pagamento de retribuição

#13.1

05/04/1993

RPI 1170

Deferimento

#9.1

01/19/1993

RPI 1155

14.4

03/10/1992

RPI 1110

14.6

12/17/1991

RPI 1098

Exigência - art. 36 da LPI

#6.1

08/13/1991

RPI 1080

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