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Official data from INPI

PROCESSO PARA A SEPARAÇÀO DE LIGNINA DE MASSA DE CELULOSE, DISPOSITIVO PARA A REALIZAÇÀO DO PROCESSO E MASSA DE CELULOSE PREPARADA PELO PROCESSO

PublicadaInvention Patent
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Application data

Number

PI8900299

Type

Invention Patent

Filing

01/25/1989

Publication

09/19/1989
View on INPI

Progress at the INPI

  1. Filing01/25/89
  2. Publication09/19/89
  3. Abandoned10/29/91
  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.

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Latest action published by the INPI: 09/19/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Acetocell GMBH & Co. KG

DE

Kunz Holding GmbH & CO.KG

DE

Inventors

D. N. (pessoa física)

DE

Technical data

IPC Classification

D21C 3/04

Priority claims

EP

88810034.4 · 01/25/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/19/1989

RPI 987

Pedido de patente depositado

#2.1

03/07/1989

RPI 959

Arquivamento - Art. 36 §1° da LPI

#11.2

10/15/1996

RPI 1350

Exigência - art. 36 da LPI

#6.1

01/09/1996

RPI 1310

Exigência - art. 36 da LPI

#6.1

08/16/1994

RPI 1237

14.1

02/16/1993

RPI 1159

Solicitação de exame técnico

#4.1

10/29/1991

RPI 1091

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