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Official data from INPI

TRANSFORMADOR ACÚSTICO

Arquivada/ExtintaUtility Model

Application data

Number

MU7001441

Type

Utility Model

Filing

07/30/1990

Publication

07/02/1991

Progress at the INPI

  1. Filing07/30/90
  2. Publication07/02/91
  3. Examination09/10/91
  4. Allowance12/01/98
  5. Grant07/27/99
  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

Eletrônica Selenium S/A

RS, BR

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Inventors

H. A. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 27/07/2006

08/26/2008

RPI 1964

Concessão da patente

#16.1

07/27/1999

RPI 1490

Deferimento

#9.1

12/01/1998

RPI 1456

Solicitação de exame técnico

#4.1

09/10/1991

RPI 1084

Publicação antecipada

#3.2

07/02/1991

RPI 1074

Pedido de patente depositado

#2.1

11/06/1990

RPI 1040

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