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Official data from INPI

Processo para fabricação de uma membrana para ultrafiltração, de poliamida, e, respectiva membrana, assim fabricada.

ArquivadaInvention Patent

Application data

Number

PI8104725

Type

Invention Patent

Filing

07/22/1981

Publication

04/13/1982

Progress at the INPI

  1. Filing07/22/81
  2. Publication04/13/82
  3. Abandoned08/10/82
  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: 05/03/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Akzo N.V.

NL

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Inventors

M. F. (pessoa física)

S. E. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

30282134 · 07/25/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

05/03/1988

RPI 915

Exigência - art. 36 da LPI

#6.1

06/02/1987

RPI 867

Conhecimento de parecer técnico

#7.1

05/22/1984

RPI 709

Solicitação de exame técnico

#4.1

08/10/1982

RPI 616

Publicação do pedido de patente

#3.1

04/13/1982

RPI 599

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era B01D 13/04.

03/27/2018

RPI 2464

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