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Official data from INPI

BUZINA PIEZOELÉTRICA

PublicadaInvention Patent

Application data

Number

PI8603832

Type

Invention Patent

Filing

08/06/1986

Publication

05/17/1988

Progress at the INPI

  1. Filing08/06/86
  2. Publication05/17/88
  3. Examination08/21/90
  4. Allowance04/02/91
  5. Grant04/28/92
  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.

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Latest action published by the INPI: 05/17/1988. 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

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/17/1988

RPI 917

Pedido de patente depositado

#2.1

01/06/1987

RPI 846

Carta-patente expirada

#21.1

Patente extinta em 06/08/2001

07/22/2008

RPI 1959

20.4

04/06/1993

RPI 1166

Concessão da patente

#16.1

04/28/1992

RPI 1117

Notificação para pagamento de retribuição

#13.1

11/05/1991

RPI 1092

15.5

09/17/1991

RPI 1085

Deferimento

#9.1

04/02/1991

RPI 1061

Solicitação de exame técnico

#4.1

08/21/1990

RPI 1029

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