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Official data from INPI

APARELHO PARA AQUECIMENTO DE UMA PECA;E PROCESSO DE AQUECIMENTO DE UMA TIRA DE ACO

Em AnáliseInvention Patent

Application data

Number

PI7607857

Type

Invention Patent

Filing

03/19/1976

Publication

-

Progress at the INPI

  1. Filing03/19/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant02/24/82
  6. Expired07/27/93

The letters patent expired on 07/27/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/13/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ALLEGHENY LUDLUM IND INC

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Inventors

B. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.11

09/13/1983

RPI 673

Pedido de licença compulsória

#20.1

06/21/1983

RPI 661

Concessão da patente

#16.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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