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Official data from INPI

PROCESSO PARA MELHORAR A RETENÇÃO DE CARGAS E FINOS DE POLPA E AUMENTAR A RAZÃO DE DESIDATAÇÃO DE ALIMENTAÇÃO NA FABRICAÇÃO DE PAPEL, PRODUTO ASSIM FABRICADO E COMPOSIÇÃO ADITIVA USADA NO MESMO.

ArquivadaInvention Patent

Application data

Number

PI8401185

Type

Invention Patent

Filing

03/15/1984

Publication

10/23/1984

Progress at the INPI

  1. Filing03/15/84
  2. Publication10/23/84
  3. Abandoned02/12/85
  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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

D. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

475.794 · 03/16/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

04/25/1989

RPI 966

Exigência - art. 36 da LPI

#6.1

10/18/1988

RPI 939

Solicitação de exame técnico

#4.1

02/12/1985

RPI 747

Publicação do pedido de patente

#3.1

10/23/1984

RPI 731

Pedido de patente depositado

#2.1

05/29/1984

RPI 710

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: D21D 3/00; D21H 3/38.

03/20/2018

RPI 2463

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