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Official data from INPI

DISPOSIÇÃO DE CIRCUITO PARA A INDICAÇÃO DO ESTADO DE TROCA DE UM FILTRO DE TROCA DE ÍONS PARA COMBUSTÍVEIS

Prazo de SigiloInvention Patent

Application data

Number

PI8803044

Type

Invention Patent

Filing

06/22/1988

Publication

02/01/1990

Progress at the INPI

  1. Filing06/22/88
  2. Publication02/01/90
  3. Examination10/16/90
  4. Allowance05/20/97
  5. Grant01/21/98
  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.

Talk to a specialist

Latest action published by the INPI: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Robert Bosch Limitada

SP, BR

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Inventors

A. P. (pessoa física)

BR

O. B. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

11/16/1988

RPI 943

Carta-patente expirada

#21.1

Patente extinta em 22/06/2008

08/26/2008

RPI 1964

Concessão da patente

#16.1

01/21/1998

RPI 1413

Deferimento

#9.1

05/20/1997

RPI 1381

Exigência - art. 36 da LPI

#6.1

11/23/1993

RPI 1199

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

Publicação do pedido de patente

#3.1

02/01/1990

RPI 1004

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