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Official data from INPI

MEMBRANAS SEMI-PERMEÁVEIS COM REGIÃO DISCRIMINATÓRIA INTERNA

Em AnáliseInvention PatentPCT · US1988003164

Application data

Number

PI8807283

Type

Invention Patent

Filing

09/14/1988

Publication

-

PCT

US1988003164

Progress at the INPI

  1. Filing09/14/88
  2. Publication
  3. Examination09/24/91
  4. Allowance
  5. Grant
  6. In force

Published on 09/24/1991, 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: 03/27/2018. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

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Inventors

C. I. (pessoa física)

D. C. (pessoa física)

E. J. (pessoa física)

F. C. (pessoa física)

H. B. (pessoa física)

J. J. (pessoa física)

Technical data

Priority claims

US

118.119 · 11/06/1987

US

118.141 · 11/06/1987

US

129.273 · 12/07/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B01D 13/00; B01D 13/04.

03/27/2018

RPI 2464

Retificação

#15.3

09/26/1995

RPI 1295

Solicitação de exame técnico

#4.1

09/24/1991

RPI 1086

Retificação da notificação da fase nacional - PCT

#1.3.1

04/10/1990

RPI 1013

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