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Official data from INPI

LANCA DE INSUFLACAO DE GAS OXIDANTE PARTICULARMENTE DE OXIGENIO PARA O TRATAMENTO DE METAIS EM FUSAO BEM COMO APLICACAO DA MESMA EM UMA INSTALACAO SIDERURGICA

ConcedidaInvention Patent
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Application data

Number

PI8108301

Type

Invention Patent

Filing

12/22/1980

Publication

07/06/1982
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Progress at the INPI

  1. Filing12/22/80
  2. Publication07/06/82
  3. Examination09/14/82
  4. Allowance02/04/86
  5. Grant06/24/86
  6. Terminated11/08/94

The patent was granted on 06/24/1986 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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SIDERURGIE FSE INST RECH [FR]

Inventors

S. B. (pessoa física)

Z. H. (pessoa física)

Technical data

IPC Classification

C21C 1/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Deferimento

#9.1

02/04/1986

RPI 798

Exigência - art. 36 da LPI

#6.1

01/29/1985

RPI 745

Republicação - classificação IPC

#15.11

01/15/1985

RPI 743

Exigência - art. 36 da LPI

#6.1

10/23/1984

RPI 731

Solicitação de exame técnico

#4.1

09/14/1982

RPI 621

Publicação antecipada

#3.2

07/06/1982

RPI 611

Pedido de patente depositado

#2.1

02/16/1982

RPI 591

Anuidade - prazo legal encerrado

#18.2

11/08/1994

RPI 1249

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