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Official data from INPI

SENSOR DE PROPORÇÃO DE MISTURA DE GASOLINA-ÁLCOOL

Prazo de SigiloInvention Patent
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Application data

Number

PI8702079

Type

Invention Patent

Filing

04/07/1987

Publication

11/08/1988
View on INPI

Progress at the INPI

  1. Filing04/07/87
  2. Publication11/08/88
  3. Examination09/18/90
  4. Allowance02/11/92
  5. Grant11/24/92
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cerâmica e Velas de Ignição NGK do Brasil Ltda

SP, BR

Cerâmica e Velas de Ignição Ngk do Brasil S/A

SP, BR

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Inventors

M. Y. (pessoa física)

BR

Technical data

IPC Classification

F02D 41/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

2.2

11/16/1988

RPI 943

Publicação do pedido de patente

#3.1

11/08/1988

RPI 942

Pedido de patente depositado

#2.1

09/06/1988

RPI 933

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Carta-patente expirada

#21.1

Patente extinta em 07/04/2002

07/29/2008

RPI 1960

20.4

10/05/1993

RPI 1192

Concessão da patente

#16.1

11/24/1992

RPI 1147

Notificação para pagamento de retribuição

#13.1

07/28/1992

RPI 1130

Deferimento

#9.1

02/11/1992

RPI 1106

Solicitação de exame técnico

#4.1

09/18/1990

RPI 1033

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