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Official data from INPI

MEMBRANA PERMEÁVEL A ÍONS E A GÁS

Em AnáliseInvention PatentPCT · US1989003716

Application data

Number

PI8907131

Type

Invention Patent

Filing

08/31/1989

Publication

02/13/1991

PCT

US1989003716

Progress at the INPI

  1. Filing08/31/89
  2. Publication02/13/91
  3. Examination09/17/91
  4. Allowance
  5. Grant
  6. In force

Published on 02/13/1991, 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: 11/21/1995. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hughes Aircraft Company

US

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Inventors

H. R. (pessoa física)

K. A. (pessoa física)

Technical data

IPC Classification

Priority claims

US

263,452 · 10/27/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

11/21/1995

RPI 1303

Solicitação de exame técnico

#4.1

09/17/1991

RPI 1085

Notificação de entrada na fase nacional - PCT

#1.3

02/13/1991

RPI 1054

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