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Official data from INPI

COMPOSIÇÃO ADEQUADA PARA USO COMO AGENTE DE RETENÇÃO EM PROCESSOS DE FABRICAÇÃO DE PAPEL, POLPA OU MATERIAL DE PAPEL OU PAPELÃO, PROCESSO PARA MODIFICAÇÃO DE MATERIAL SILICIOSO COLOIDAL, PROCESSO PARA PRODUÇÃO DE PAPEL OU PAPELÃO, E PAPEL OU PAPELÃO ASSIM OBTIDO

ArquivadaInvention Patent

Application data

Number

PI8904956

Type

Invention Patent

Filing

09/29/1989

Publication

04/02/1991

Progress at the INPI

  1. Filing09/29/89
  2. Publication04/02/91
  3. Abandoned05/04/93
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/03/1998. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Laporte Industries Limited

GB

Inventors

A. D. (pessoa física)

AU

Technical data

IPC Classification

Priority claims

GB

8828899.8 · 12/10/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

11/03/1998

RPI 1452

Exigência - art. 36 da LPI

#6.1

05/05/1998

RPI 1428

Exigência - art. 36 da LPI

#6.1

07/04/1995

RPI 1283

Solicitação de exame técnico

#4.1

05/04/1993

RPI 1170

Publicação do pedido de patente

#3.1

04/02/1991

RPI 1061

Pedido de patente depositado

#2.1

03/06/1990

RPI 1008

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