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Official data from INPI

PROCESSO PARA PÓS-TRATAMENTO REATIVO PARA MEMBRANAS DE SEPARAÇÃO DE GASES

PublicadaInvention Patent

Application data

Number

PI8802377

Type

Invention Patent

Filing

05/17/1988

Publication

12/05/1989

Progress at the INPI

  1. Filing05/17/88
  2. Publication12/05/89
  3. Examination10/29/91
  4. Allowance
  5. Grant
  6. In force

Published on 12/05/1989, 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: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

No applicants.

Inventors

O. E. (pessoa física)

US

P. M. (pessoa física)

US

R. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

175.500 · 04/13/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/05/1989

RPI 998

Pedido de patente depositado

#2.1

10/25/1988

RPI 940

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C08J 5/18; B01D 13/04.

03/27/2018

RPI 2464

Retificação

#15.3

02/16/1994

RPI 1211

Solicitação de exame técnico

#4.1

10/29/1991

RPI 1091

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