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Official data from INPI

PROCESSO PARA A FILTRAÇÃO DE UMA CORRENTE DE PLÁSTICO QUENTE E MACIA E CONJUNTO DE FILTRAÇÃO PARA INSTALAÇÕES EXTRUSORAS PARA REALIZAR O PROCESSO

PublicadaInvention Patent

Application data

Number

PI8805593

Type

Invention Patent

Filing

10/27/1988

Publication

07/11/1989

Progress at the INPI

  1. Filing10/27/88
  2. Publication07/11/89
  3. Examination08/06/91
  4. Allowance04/09/96
  5. Grant03/25/97
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 07/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Indupack Ag

CH

Inventors

G. P. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

04248/87 · 10/29/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/11/1989

RPI 977

Pedido de patente depositado

#2.1

03/14/1989

RPI 960

Carta-patente expirada

#21.1

Patente extinta em 27/10/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

03/25/1997

RPI 1373

Republicação - classificação IPC

#15.11

04/23/1996

RPI 1325

Deferimento

#9.1

04/09/1996

RPI 1323

Solicitação de exame técnico

#4.1

08/06/1991

RPI 1079

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