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Official data from INPI

DISPOSIÇÃO INTRODUZIDA EM ALTO FALANTE PIEZO-ELÉTRICO

Arquivada/ExtintaUtility Model
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Application data

Number

MU7002945

Type

Utility Model

Filing

08/30/1990

Publication

03/24/1992
View on INPI

Progress at the INPI

  1. Filing08/30/90
  2. Publication03/24/92
  3. Examination08/04/92
  4. Allowance05/02/00
  5. Grant08/22/00
  6. Expired08/26/08

The letters patent expired on 08/26/2008: 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: 08/26/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Leson Laboratório de Engenharia Sônica Ltda

SP, BR

Leson Laboratório de Engenharia Sônica S/A

SP, BR

S. Eletro Acústica S/A

SP, BR

Inventors

H. B. (pessoa física)

BR

Technical data

IPC Classification

H04R 17/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/08/2007

08/26/2008

RPI 1964

Concessão da patente

#16.1

08/22/2000

RPI 1546

Deferimento

#9.1

05/02/2000

RPI 1530

15.10

Alterada a natureza de PI 9004306-5 para MU 7002945-8

08/24/1999

RPI 1494

Conhecimento de parecer técnico

#7.1

12/15/1998

RPI 1458

14.4

06/14/1994

RPI 1228

14.1

04/20/1993

RPI 1168

Solicitação de exame técnico

#4.1

08/04/1992

RPI 1131

Publicação do pedido de patente

#3.1

03/24/1992

RPI 1112

Pedido de patente depositado

#2.1

03/12/1991

RPI 1058

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