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Official data from INPI

VELA DE IGNIÇÃO COM ELETRODOS LATERAIS MÚLTIPLOS

Prazo de SigiloUtility Model

Application data

Number

MU6900954

Type

Utility Model

Filing

05/23/1989

Publication

04/16/1991

Progress at the INPI

  1. Filing05/23/89
  2. Publication04/16/91
  3. Examination06/29/93
  4. Allowance11/01/94
  5. Grant07/25/95
  6. Expired11/20/01

The letters patent expired on 11/20/2001: 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NGK Spark Plug CO LTD

JP

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Inventors

T. O. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

69132 · 05/25/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/25/1989

RPI 979

Carta-patente expirada

#21.1

Patente extinta em 23/05/1999 conforme o disposto no artigo 24 da Lei 5772/71 (CPI).

11/20/2001

RPI 1611

Concessão da patente

#16.1

07/25/1995

RPI 1286

Notificação para pagamento de retribuição

#13.1

03/07/1995

RPI 1266

Deferimento

#9.1

11/01/1994

RPI 1248

Solicitação de exame técnico

#4.1

06/29/1993

RPI 1178

Publicação do pedido de patente

#3.1

04/16/1991

RPI 1063

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