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Official data from INPI

APERFEICOAMENTO EM APARELHAGEM DE FRENAGEM DE LOCOMOTIVA

Em AnáliseInvention Patent

Application data

Number

PI7703649

Type

Invention Patent

Filing

06/08/1976

Publication

-

Progress at the INPI

  1. Filing06/08/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant01/31/84
  6. Terminated12/15/87

The patent was granted on 01/31/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WESTINGHOUSE AIR BRAKE CO

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Inventors

R. J. (pessoa física)

W. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

11/03/1981

RPI 576

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