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Official data from INPI

APERFEIÇOAMENTO INTRODUZIDO EM FILTRO

DeferidaInvention Patent

Application data

Number

PI8500920

Type

Invention Patent

Filing

03/01/1985

Publication

07/09/1985

Progress at the INPI

  1. Filing03/01/85
  2. Publication07/09/85
  3. Examination10/15/85
  4. Allowance08/01/89
  5. Grant02/06/90
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 08/01/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Melida Comércio e Indústria Ltda.

SP, BR

Inventors

P. K. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

08/01/1989

RPI 980

Exigência - art. 36 da LPI

#6.1

01/17/1989

RPI 952

Solicitação de exame técnico

#4.1

10/15/1985

RPI 782

Publicação antecipada

#3.2

07/09/1985

RPI 768

Pedido de patente depositado

#2.1

05/21/1985

RPI 761

Carta-patente expirada

#21.1

Patente extinta em 01/03/2000

07/15/2008

RPI 1958

20.7

08/14/1990

RPI 1028

Concessão da patente

#16.1

02/06/1990

RPI 1005

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