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Official data from INPI

TRATAMENTO EM MASSA DE MATERIAIS CELULÓSICOS

Em AnáliseInvention PatentPCT · US1989003623

Application data

Number

PI8907106

Type

Invention Patent

Filing

08/23/1989

Publication

02/05/1991

PCT

US1989003623

Progress at the INPI

  1. Filing08/23/89
  2. Publication02/05/91
  3. Examination08/27/91
  4. Allowance
  5. Grant
  6. In force

Published on 02/05/1991, 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: 08/23/1994. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

L. A. (pessoa física)

US

Inventors

C. K. (pessoa física)

R. W. (pessoa física)

Technical data

IPC Classification

Priority claims

US

252.421 · 09/30/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

08/23/1994

RPI 1238

Solicitação de exame técnico

#4.1

08/27/1991

RPI 1082

Notificação de entrada na fase nacional - PCT

#1.3

02/05/1991

RPI 1053

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