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Official data from INPI

APERFEICOAMENTO EM MECANISMO DE FREIO DE VEICULO CONTROLADO A PRESSAO DE FLUIDO

ConcedidaInvention Patent

Application data

Number

PI7806332

Type

Invention Patent

Filing

10/11/1977

Publication

-

Progress at the INPI

  1. Filing10/11/77
  2. Publication
  3. Examination
  4. Allowance11/13/84
  5. Grant05/28/85
  6. Terminated01/28/92

The patent was granted on 05/28/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WESTINGHOUSE AIR BRAKE CO

See this company's full portfolio

Inventors

B. R. (pessoa física)

W. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Deferimento

#9.1

11/13/1984

RPI 734

Exigência - art. 36 da LPI

#6.1

05/15/1984

RPI 708

Exigência - art. 36 da LPI

#6.1

12/13/1983

RPI 686

Exigência - art. 36 da LPI

#6.1

06/28/1983

RPI 662

Republicação - classificação IPC

#15.11

01/11/1983

RPI 638

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

Pedido de licença compulsória

#20.1

10/16/1990

RPI 1037

20.3

08/21/1990

RPI 1029

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