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Official data from INPI

APERFEICOAMENTO EM PROCESSO PARA PRODUZIR ACO AO SILICIO COM GRAO ORIENTADO E ARTIGO DE MANUFATURA

Em AnáliseInvention Patent

Application data

Number

PI7603175

Type

Invention Patent

Filing

05/23/1975

Publication

-

Progress at the INPI

  1. Filing05/23/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Terminated11/17/87

The patent was granted 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: 11/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ALLEGHENY LUDLUM IND INC

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Inventors

C. E. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/17/1987

RPI 891

Pedido de licença compulsória

#20.1

12/07/1982

RPI 633

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