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Official data from INPI

PROCESSO PARA A DETERMINAÇÃO DO TEOR DE CARBONO DE FUSÕES DE AÇO POR ANALISE TÉRMICA.

ConcedidaInvention Patent

Application data

Number

PI8102130

Type

Invention Patent

Filing

04/08/1981

Publication

10/13/1981

Progress at the INPI

  1. Filing04/08/81
  2. Publication10/13/81
  3. Examination11/16/83
  4. Allowance04/09/85
  5. Grant08/27/85
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Electro-Nite N.V.

BE

Inventors

I. C. (pessoa física)

O. P. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 30 13 621.1 · 04/09/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

07/30/1985

RPI 771

Deferimento

#9.1

04/09/1985

RPI 755

Exigência - art. 36 da LPI

#6.1

07/03/1984

RPI 715

Solicitação de exame técnico

#4.1

11/16/1983

RPI 682

Publicação do pedido de patente

#3.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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