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Official data from INPI

ELETRODO COMPOSTO PARA FORNOS DE ARCO ELETRICO

ConcedidaInvention Patent
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Application data

Number

PI7705780

Type

Invention Patent

Filing

09/01/1976

Publication

-
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Progress at the INPI

  1. Filing09/01/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/27/82
  6. Terminated10/23/90

The patent was granted on 07/27/1982 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: 07/27/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CANADA STEEL CO

Inventors

P. O. (pessoa física)

Technical data

IPC Classification

H05B 7/06

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/27/1982

RPI 614

Anuidade - prazo legal encerrado

#18.2

10/23/1990

RPI 1038

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