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Official data from INPI

FOLHA E TIRA DE ACO DE BAIXO TEOR DE CARBONO,RECOZIDAS E REDUZIDAS A FRIO,E PROCESSO PARA SUA PRODUCAO

Em AnáliseInvention Patent

Application data

Number

PI7601162

Type

Invention Patent

Filing

02/28/1975

Publication

-

Progress at the INPI

  1. Filing02/28/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/25/82
  6. Invalidated11/16/82

The patent was invalidated by the INPI in an administrative invalidity proceeding. Protection no longer exists.

Talk to a specialist

Latest action published by the INPI: 11/16/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ARMCO STEEL CORP

Inventors

E. J. (pessoa física)

N. J. (pessoa física)

P. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

200

11/16/1982

RPI 630

Concessão da patente

#16.1

05/25/1982

RPI 605

Concessão da patente

#16.1

02/24/1982

RPI 592

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