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Official data from INPI

VALVULA, PRINCIPALMENTE PARA MOTORES DE COMBUSTAO INTERNA, DO TIPO COGUMELO E ESFRIADA MEDIANTE CIRCULACAO FORCADA DE UM FLUIDO DE REFRIGERACAO

ConcedidaInvention Patent

Application data

Number

PI7906441

Type

Invention Patent

Filing

10/25/1978

Publication

-

Progress at the INPI

  1. Filing10/25/78
  2. Publication
  3. Examination
  4. Allowance01/25/83
  5. Grant10/25/83
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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: 10/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SEMT

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Inventors

C. R. (pessoa física)

J. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1983

RPI 679

Notificação para pagamento de retribuição

#13.1

05/31/1983

RPI 658

Deferimento

#9.1

01/25/1983

RPI 640

Exigência - art. 36 da LPI

#6.1

07/20/1982

RPI 613

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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