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Official data from INPI

MEMBRANA PARA DIÁLISE, DE CELULOSE, E, PROCESSO DE SUA OBTENÇÃO.

IndeferidaInvention Patent

Application data

Number

PI8103677

Type

Invention Patent

Filing

06/10/1981

Publication

03/02/1982

Progress at the INPI

Under appeal
  1. Filing06/10/81
  2. Publication03/02/82
  3. Examination02/21/84
  4. Refused06/17/86
  5. Grant
  6. In force

The application was refused by the INPI on 06/17/1986. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 06/17/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Akzo N.V.

NL

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Inventors

B. J. (pessoa física)

B. A. (pessoa física)

G. K. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

30219433 · 06/12/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

06/17/1986

RPI 817

Conhecimento de parecer técnico

#7.1

11/20/1984

RPI 735

Solicitação de exame técnico

#4.1

02/21/1984

RPI 696

Publicação do pedido de patente

#3.1

03/02/1982

RPI 593

Republicação - classificação IPC

#15.11

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

03/20/2018

RPI 2463

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