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Official data from INPI

APARELHO DE FILTRAÇÃO E PROCESSO DE LIMPEZA DO MESMO.

PublicadaInvention Patent

Application data

Number

PI8800712

Type

Invention Patent

Filing

02/22/1988

Publication

10/04/1988

Progress at the INPI

  1. Filing02/22/88
  2. Publication10/04/88
  3. Examination09/11/90
  4. Allowance03/26/96
  5. Grant10/28/97
  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: 10/04/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Degremont

FR

Degremont S.A.

FR

See this company's full portfolio

Inventors

H. L. (pessoa física)

FR

J. V. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

87/02285 · 02/23/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/04/1988

RPI 937

Pedido de patente depositado

#2.1

05/31/1988

RPI 919

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era B01D 23/24.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 22/02/2008

08/26/2008

RPI 1964

Concessão da patente

#16.1

10/28/1997

RPI 1404

Deferimento

#9.1

03/26/1996

RPI 1321

Exigência - art. 36 da LPI

#6.1

09/19/1995

RPI 1294

Exigência - art. 36 da LPI

#6.1

12/13/1994

RPI 1254

Solicitação de exame técnico

#4.1

09/11/1990

RPI 1032

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