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Official data from INPI

MEMBRANA, PROCESSO PARA SUA PREPARAÇÃO, PROCESSO PARA SEPARAÇÃO DE GÁS E PROCESSO PARA MICROFILTRAÇÃO E ULTRAFILTRAÇÃO

ArquivadaInvention Patent

Application data

Number

PI9000345

Type

Invention Patent

Filing

01/26/1990

Publication

12/04/1990

Progress at the INPI

  1. Filing01/26/90
  2. Publication12/04/90
  3. Abandoned11/24/92
  4. Allowance
  5. Grant
  6. In force

The application was abandoned at the INPI. The case ended without a patent and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/22/1998. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

North Wesr Water Group plc.

GB

See this company's full portfolio

Inventors

H. C. (pessoa física)

GB

T. T. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8901672.9 · 01/26/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

11.31

04/22/1998

RPI 1426

Exigência - art. 36 da LPI

#6.1

02/04/1997

RPI 1366

14.1

09/13/1994

RPI 1241

Solicitação de exame técnico

#4.1

11/24/1992

RPI 1147

Publicação do pedido de patente

#3.1

12/04/1990

RPI 1044

Pedido de patente depositado

#2.1

04/10/1990

RPI 1013

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