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Official data from INPI

PROCESSO PARA DETECTAR VOLUME BAIXO DE ÓLEO NO CÁRTER DE MOTOR DE PISTÃO ALTERNATIVO EM OPERAÇÃO E RESPECTIVO MOTOR

ConcedidaInvention Patent

Application data

Number

PI8501760

Type

Invention Patent

Filing

04/12/1985

Publication

12/10/1985

Progress at the INPI

  1. Filing04/12/85
  2. Publication12/10/85
  3. Examination06/24/86
  4. Allowance10/04/88
  5. Grant09/26/89
  6. Terminated03/10/92

The patent was granted on 09/26/1989 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Champion Spark Plug Company

US

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Inventors

M. L. (pessoa física)

US

R. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

605350 · 04/30/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

01/24/1989

RPI 953

Deferimento

#9.1

10/04/1988

RPI 937

Solicitação de exame técnico

#4.1

06/24/1986

RPI 818

Publicação do pedido de patente

#3.1

12/10/1985

RPI 790

Pedido de patente depositado

#2.1

07/02/1985

RPI 767

Anuidade - prazo legal encerrado

#18.2

03/10/1992

RPI 1110

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