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Official data from INPI

LANCA DE INJECAO DE GAS PARA CONVERSOR METALURGICO

ConcedidaInvention Patent

Application data

Number

PI8300661

Type

Invention Patent

Filing

02/10/1982

Publication

11/08/1983

Progress at the INPI

  1. Filing02/10/82
  2. Publication11/08/83
  3. Examination06/26/84
  4. Allowance09/30/86
  5. Grant08/25/87
  6. Terminated04/18/95

The patent was granted on 08/25/1987 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SIDERURGIE FSE INST RECH [FR]

Inventors

R. D. (pessoa física)

Z. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

9.1.3

03/17/1987

RPI 856

Deferimento

#9.1

09/30/1986

RPI 832

Exigência - art. 36 da LPI

#6.1

04/16/1985

RPI 756

Solicitação de exame técnico

#4.1

06/26/1984

RPI 714

Publicação do pedido de patente

#3.1

11/08/1983

RPI 681

Pedido de patente depositado

#2.1

03/29/1983

RPI 649

Anuidade - prazo legal encerrado

#18.2

04/18/1995

RPI 1272

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