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Official data from INPI

CARCACA DE VALVULA TIPO COGUMELO ESFRIADA MEDIANTE CIRCULACAO DE UM FLUIDO DE REFRIGERACAO,PARA MOTOR DE COMBUSTAO INTERNA,PRINCIPALMENTE PARA MOTOR QUE COMPREENDE DUAS VALVULAS DE ESCAPE POR CILINDRO E PROCESSO DE MONTAGEM DA REFERIDA CARCACA

ConcedidaInvention Patent

Application data

Number

PI8000065

Type

Invention Patent

Filing

01/29/1979

Publication

-

Progress at the INPI

  1. Filing01/29/79
  2. Publication
  3. Examination
  4. Allowance02/14/84
  5. Grant10/30/84
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 10/30/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SEMT

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Inventors

P. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/30/1984

RPI 732

Notificação para pagamento de retribuição

#13.1

06/05/1984

RPI 711

Deferimento

#9.1

02/14/1984

RPI 695

Exigência - art. 36 da LPI

#6.1

09/06/1983

RPI 672

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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