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Official data from INPI

TRUQUE PARA VAGAO FERROVIARIO

Em AnáliseInvention Patent

Application data

Number

PI7904674

Type

Invention Patent

Filing

07/21/1978

Publication

-

Progress at the INPI

  1. Filing07/21/78
  2. Publication
  3. Examination
  4. Allowance05/18/82
  5. Grant11/29/83
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 12/02/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. I. (pessoa física)

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Inventors

C. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

12/02/1986

RPI 841

Concessão da patente

#16.1

11/29/1983

RPI 684

110

07/19/1983

RPI 665

Recurso

#12.1

09/14/1982

RPI 621

Deferimento

#9.1

05/18/1982

RPI 604

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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