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Official data from INPI

PROCESSO DE PREPARAÇÃO DE ELEMENTO SENSOR DE OXIGÊNIO

DeferidaInvention Patent

Application data

Number

PI8305064

Type

Invention Patent

Filing

09/14/1983

Publication

02/07/1984

Progress at the INPI

  1. Filing09/14/83
  2. Publication02/07/84
  3. Examination05/15/84
  4. Allowance10/03/89
  5. Grant06/26/90
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cerâmica e Velas de Ignição NGK do Brasil Ltda

SP, BR

See this company's full portfolio

Inventors

M. Y. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

10/03/1989

RPI 989

Exigência - art. 36 da LPI

#6.1

03/28/1989

RPI 962

Republicação - classificação IPC

#15.11

01/14/1986

RPI 795

Exigência - art. 36 da LPI

#6.1

12/31/1985

RPI 793

Solicitação de exame técnico

#4.1

05/15/1984

RPI 708

Publicação antecipada

#3.2

02/07/1984

RPI 694

Pedido de patente depositado

#2.1

11/22/1983

RPI 683

Carta-patente expirada

#21.1

Patente extinta em 14/09/98

07/01/2008

RPI 1956

20.4

03/30/1993

RPI 1165

Concessão da patente

#16.1

06/26/1990

RPI 1024

Notificação para pagamento de retribuição

#13.1

02/01/1990

RPI 1004

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