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Official data from INPI

CIRCUITO DE ACOPLAMENTO ENTRE FONTE DE ENERGIA DE AUDIO FREQUÊNCIA E UM TRANSDUTOR PIEZO-ELÉTRICO.

Em AnáliseInvention Patent

Application data

Number

PI8704742

Type

Invention Patent

Filing

09/14/1987

Publication

03/21/1989

Progress at the INPI

  1. Filing09/14/87
  2. Publication03/21/89
  3. Abandoned10/31/89
  4. Allowance
  5. Grant
  6. In force

The applicant withdrew the application. The case ended without a patent.

Talk to a specialist

Latest action published by the INPI: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Leson Laboratório de Engenharia Sônica S/A

SP, BR

Inventors

H. B. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/31/1989

RPI 993

Publicação do pedido de patente

#3.1

03/21/1989

RPI 961

Pedido de patente depositado

#2.1

11/24/1987

RPI 892

10.1

10/18/1994

RPI 1246

Deferimento

#9.1

03/01/1994

RPI 1213

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