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Official data from INPI

PISTÃO REFRIGERADO A OLEO PARA MOTORES DE COMBUSTÃO INTERNA

Em AnáliseInvention Patent

Application data

Number

PI7904232

Type

Invention Patent

Filing

07/05/1979

Publication

-

Progress at the INPI

  1. Filing07/05/79
  2. Publication
  3. Examination05/17/83
  4. Allowance11/16/83
  5. Grant05/29/84
  6. Terminated05/17/88

The patent was granted on 05/29/1984 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: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Mahle Gmbh

DE

Mahle GMBH

DE

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Inventors

B. A. (pessoa física)

E. J. (pessoa física)

G. W. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P28 29 494.2 · 07/05/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

03/20/1984

RPI 700

Deferimento

#9.1

11/16/1983

RPI 682

Solicitação de exame técnico

#4.1

05/17/1983

RPI 656

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