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Official data from INPI

PROCESSO PARA PRODUZIR ELETRODO CENTRAL COMPOSTO EM BRUTO PARA VELA DE IGNIÇÃO

Em AnáliseInvention Patent

Application data

Number

PI8600978

Type

Invention Patent

Filing

03/06/1986

Publication

11/18/1986

Progress at the INPI

  1. Filing03/06/86
  2. Publication11/18/86
  3. Examination09/27/88
  4. Allowance07/30/91
  5. Grant06/30/92
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 11/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Champion Spark Plug Company

US

See this company's full portfolio

Inventors

D. A. (pessoa física)

US

R. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

710.341 · 03/11/1985

US

817.698 · 01/13/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

11/14/1989

RPI 995

Solicitação de exame técnico

#4.1

09/27/1988

RPI 936

Publicação do pedido de patente

#3.1

11/18/1986

RPI 839

Pedido de patente depositado

#2.1

08/26/1986

RPI 827

Carta-patente expirada

#21.1

Patente extinta em 06/03/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

06/30/1992

RPI 1126

Notificação para pagamento de retribuição

#13.1

11/26/1991

RPI 1095

Deferimento

#9.1

07/30/1991

RPI 1078

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