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Official data from INPI

DISPOSITIVO DE VALVULA DE EMERGENCIA PARA USO EM UMA APARELHAGEM DE FREIO

Em AnáliseInvention Patent

Application data

Number

PI7805267

Type

Invention Patent

Filing

08/18/1977

Publication

-

Progress at the INPI

  1. Filing08/18/77
  2. Publication
  3. Examination
  4. Allowance10/09/84
  5. Grant03/26/85
  6. Terminated09/06/88

The patent was granted on 03/26/1985 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: 09/06/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WESTINGHOUSE AIR BRAKE CO

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Inventors

H. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/06/1988

RPI 933

Concessão da patente

#16.1

03/26/1985

RPI 753

Deferimento

#9.1

10/09/1984

RPI 729

8.1

08/21/1984

RPI 722

8.1

07/03/1984

RPI 715

Exigência - art. 36 da LPI

#6.1

10/25/1983

RPI 679

Exigência - art. 36 da LPI

#6.1

05/10/1983

RPI 655

Exigência - art. 36 da LPI

#6.1

03/02/1982

RPI 593

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