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Official data from INPI

DISPOSITIVO PARA GERAR ALTA TENSÃO ELÉTRICA.

Em AnáliseInvention Patent

Application data

Number

PI8706765

Type

Invention Patent

Filing

12/09/1987

Publication

07/19/1988

Progress at the INPI

  1. Filing12/09/87
  2. Publication07/19/88
  3. Examination11/07/89
  4. Allowance02/24/93
  5. Grant09/28/93
  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.

Talk to a specialist

Latest action published by the INPI: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NGK Spark Plug Co. Ltd

JP

See this company's full portfolio

Inventors

K. O. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

307294 · 12/23/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/07/1989

RPI 994

Publicação do pedido de patente

#3.1

07/19/1988

RPI 926

Pedido de patente depositado

#2.1

03/29/1988

RPI 910

Carta-patente expirada

#21.1

Patente extinta em 09/12/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

09/28/1993

RPI 1191

Notificação para pagamento de retribuição

#13.1

06/08/1993

RPI 1175

Deferimento

#9.1

02/24/1993

RPI 1160

Republicação - classificação IPC

#15.11

08/11/1992

RPI 1132

Exigência - art. 36 da LPI

#6.1

07/21/1992

RPI 1129

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