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Official data from INPI

DEPURADOR DE GASES

ConcedidaInvention Patent

Application data

Number

PI8402465

Type

Invention Patent

Filing

05/23/1984

Publication

09/25/1984

Progress at the INPI

  1. Filing05/23/84
  2. Publication09/25/84
  3. Examination12/18/84
  4. Allowance01/10/89
  5. Grant09/26/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. H. (pessoa física)

SC, BR

Inventors

D. H. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Deferimento

#9.1

01/10/1989

RPI 951

Exigência - art. 36 da LPI

#6.1

07/05/1988

RPI 924

Solicitação de exame técnico

#4.1

12/18/1984

RPI 739

Publicação antecipada

#3.2

09/25/1984

RPI 727

Pedido de patente depositado

#2.1

07/31/1984

RPI 719

Carta-patente expirada

#21.1

Patente extinta em 23/05/99

07/08/2008

RPI 1957

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