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Official data from INPI

PROCESSO PARA FABRICACAO DE UM PISTAO PARA MOTOR DE COMBUSTAO INTERNA,O PISTAO OBTIDO E UM IMPLANTE PROVIDO NO PISTAO

Em AnáliseInvention Patent

Application data

Number

PI7703779

Type

Invention Patent

Filing

08/19/1976

Publication

-

Progress at the INPI

  1. Filing08/19/76
  2. Publication
  3. Examination
  4. Allowance10/13/81
  5. Grant08/31/82
  6. Terminated12/15/87

The patent was granted on 08/31/1982 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: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PERKINS ENGINES LTD

Inventors

D. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Concessão da patente

#16.1

08/31/1982

RPI 619

Notificação para pagamento de retribuição

#13.1

03/02/1982

RPI 593

Deferimento

#9.1

10/13/1981

RPI 573

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