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Official data from INPI

DISPOSITIVO PARA A DETERMINAÇÃO DO TEOR DE OXIGÊNIO ATIVO DE MASSAS FUNDIDAS DE FERRO FUNDIDO, FERRO OU AÇO.

ConcedidaInvention Patent

Application data

Number

PI8103698

Type

Invention Patent

Filing

06/11/1981

Publication

03/02/1982

Progress at the INPI

  1. Filing06/11/81
  2. Publication03/02/82
  3. Examination08/10/82
  4. Allowance03/19/85
  5. Grant10/29/85
  6. Expired10/08/96

The letters patent expired on 10/08/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Electro-Nite N.V.

BE

Inventors

S. H. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 30 21 949.9 · 06/12/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

07/09/1985

RPI 768

Deferimento

#9.1

03/19/1985

RPI 752

Exigência - art. 36 da LPI

#6.1

06/26/1984

RPI 714

Solicitação de exame técnico

#4.1

08/10/1982

RPI 616

Publicação do pedido de patente

#3.1

03/02/1982

RPI 593

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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