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Official data from INPI

DISPOSITIVO SILENCIADOR PARA ESCAPE DE MOTORES E SIMILARES COM INTERFERÊNCIA ACÚSTICA

Prazo de SigiloInvention Patent

Application data

Number

PI8903351

Type

Invention Patent

Filing

06/30/1989

Publication

01/08/1991

Progress at the INPI

Under appeal
  1. Filing06/30/89
  2. Publication01/08/91
  3. Examination08/27/91
  4. Refused01/18/94
  5. Grant
  6. In force

The application was refused by the INPI on 01/18/1994. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. M. (pessoa física)

IT

Inventors

A. M. (pessoa física)

IT

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

10/24/1989

RPI 992

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era F01N 7/04.

03/27/2018

RPI 2464

Indeferimento

#9.2

01/18/1994

RPI 1207

Solicitação de exame técnico

#4.1

08/27/1991

RPI 1082

Publicação do pedido de patente

#3.1

01/08/1991

RPI 1049

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