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Official data from INPI

PROCESSO DE LIMPEZA DE UM LEITO DE FILTRO E SISTEMA DE LIMPEZA DE FILTRO

Em AnáliseInvention Patent

Application data

Number

PI8602891

Type

Invention Patent

Filing

06/23/1986

Publication

02/17/1987

Progress at the INPI

  1. Filing06/23/86
  2. Publication02/17/87
  3. Examination07/14/87
  4. Allowance
  5. Grant
  6. In force

Published on 02/17/1987, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 07/14/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. C. (pessoa física)

US

Inventors

K. W. (pessoa física)

Technical data

Priority claims

US

760.258 · 07/29/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/14/1987

RPI 873

Publicação do pedido de patente

#3.1

02/17/1987

RPI 852

Pedido de patente depositado

#2.1

12/23/1986

RPI 844

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B01D 23/24; B01D 36/00; B01D 41/02; B01D 41/00.

03/27/2018

RPI 2464

Retificação

#15.3

06/25/1991

RPI 1073

14.1

09/11/1990

RPI 1032

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