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Official data from INPI

ATIVADOR SUPERFICIAL,RESINA MALEICA E/OU FUMARICA,COMPOSICAO,EMULSAO E METODO PARA PREPARACAO DE UM ATIVADOR SUPERFICIAL,PARTICULARMENTE PARA ESPESSAMENTO DE PAPEL

Em AnáliseInvention Patent

Application data

Number

PI8501639

Type

Invention Patent

Filing

04/09/1985

Publication

11/11/1986

Progress at the INPI

  1. Filing04/09/85
  2. Publication11/11/86
  3. Examination06/21/88
  4. Allowance
  5. Grant
  6. In force

Published on 11/11/1986, 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: 06/21/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Albright & Wilson Limited

AU

See this company's full portfolio

Inventors

M. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/21/1988

RPI 922

Publicação do pedido de patente

#3.1

11/11/1986

RPI 838

Pedido de patente depositado

#2.1

07/02/1985

RPI 767

Retificação

#15.3

05/28/1991

RPI 1069

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