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Official data from INPI

DISPOSICAO DE CIRCUITO DE PISTA PARA UMA SECAO DE UMA FERROVIA DE BITOLA DUPLA ELETRIFICADA;E PARA DETECAO E SUPRIMENTO DE ENERGIA DE SINAL DE CABINA A TRENS

ConcedidaInvention Patent

Application data

Number

PI7701278

Type

Invention Patent

Filing

03/03/1976

Publication

-

Progress at the INPI

  1. Filing03/03/76
  2. Publication
  3. Examination
  4. Allowance03/30/82
  5. Grant10/26/82
  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.

Talk to a specialist

Latest action published by the INPI: 10/26/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WESTINGHOUSE AIR BRAKE CO

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Inventors

S. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/26/1982

RPI 627

Notificação para pagamento de retribuição

#13.1

07/20/1982

RPI 613

Deferimento

#9.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

20.11

12/26/1990

RPI 1047

Pedido de licença compulsória

#20.1

10/23/1990

RPI 1038

Pedido de licença compulsória

#20.1

10/16/1990

RPI 1037

20.3

08/21/1990

RPI 1029

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