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Official data from INPI

PROCESSO E DISPOSITIVO PARA A PURIFICAÇÃO DO AR, GASES DE COMBUSTÃO OU EQUIVALENTES

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004201

Type

Invention Patent

Filing

08/24/1990

Publication

09/03/1991

Progress at the INPI

  1. Filing08/24/90
  2. Publication09/03/91
  3. Examination09/21/93
  4. Allowance09/12/95
  5. Grant05/28/96
  6. Expired06/01/10

The letters patent expired on 06/01/2010: 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: 06/01/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Oy Airtunnel Ltd

FI

Inventors

V. I. (pessoa física)

FI

Technical data

IPC Classification

Priority claims

FI

893998 · 08/25/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 24/08/2005

06/01/2010

RPI 2056

Concessão da patente

#16.1

05/28/1996

RPI 1330

Deferimento

#9.1

09/12/1995

RPI 1293

Solicitação de exame técnico

#4.1

09/21/1993

RPI 1190

Publicação do pedido de patente

#3.1

09/03/1991

RPI 1083

Pedido de patente depositado

#2.1

02/26/1991

RPI 1056

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