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Official data from INPI

APARELHO DE FILTRO E PROCESSO DE FILTRAGEM

Em AnáliseInvention Patent

Application data

Number

PI8702045

Type

Invention Patent

Filing

04/27/1987

Publication

02/09/1988

Progress at the INPI

Technical opinion to answer
  1. Filing04/27/87
  2. Publication02/09/88
  3. Examination10/04/88
  4. Allowance
  5. Grant
  6. In force

The INPI issued a technical opinion on patentability. The applicant must respond for examination to continue.

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Latest action published by the INPI: 10/04/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Filtra-Systems Company

US

Inventors

D. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

856,406 · 04/28/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/04/1988

RPI 937

Publicação do pedido de patente

#3.1

02/09/1988

RPI 903

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era B01D 33/14.

03/20/2018

RPI 2463

Retificação

#15.3

11/01/1994

RPI 1248

Conhecimento de parecer técnico

#7.1

11/30/1993

RPI 1200

14.1

06/19/1990

RPI 1023

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