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Official data from INPI

UM PROCESSO PARA SECAGEM DE MEMBRANAS DE POLICARBONATO ÚMIDAS COM ÁGUA

Em AnáliseInvention PatentPCT · US1989001911

Application data

Number

PI8906983

Type

Invention Patent

Filing

05/05/1989

Publication

12/18/1990

PCT

US1989001911

Progress at the INPI

Technical opinion to answer
  1. Filing05/05/89
  2. Publication12/18/90
  3. Examination03/17/92
  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: 10/10/1995. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

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Inventors

W. A. (pessoa física)

Technical data

IPC Classification

Priority claims

US

192.275 · 05/10/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

10/10/1995

RPI 1297

Conhecimento de parecer técnico

#7.1

11/15/1994

RPI 1250

Solicitação de exame técnico

#4.1

03/17/1992

RPI 1111

Notificação de entrada na fase nacional - PCT

#1.3

12/18/1990

RPI 1046

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