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Official data from INPI

PAINEL PARA DESCARGA DE GAS E PROCESSO PARA SUA MANUFATUR

Arquivada/ExtintaInvention Patent

Application data

Number

PI7607731

Type

Invention Patent

Filing

11/19/1975

Publication

-

Progress at the INPI

  1. Filing11/19/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  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.

Talk to a specialist

Latest action published by the INPI: 07/27/1993. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

FUJITSU LTD

Inventors

Y. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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