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Official data from INPI

DISPOSITIVO PROTETOR DE CIRCUITO

Em AnáliseInvention Patent

Application data

Number

PI7603424

Type

Invention Patent

Filing

06/02/1975

Publication

-

Progress at the INPI

  1. Filing06/02/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WESTINGHOUSE ELECTRIC CORP

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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