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Official data from INPI

MEMBRANA COMPÓSITA E PROCESSO PARA SUA OBTENÇÃO

Prazo de SigiloInvention Patent

Application data

Number

PI8902397

Type

Invention Patent

Filing

05/24/1989

Publication

01/23/1990

Progress at the INPI

  1. Filing05/24/89
  2. Publication01/23/90
  3. Examination04/21/92
  4. Allowance09/08/99
  5. Grant05/30/00
  6. Expired12/26/12

The letters patent expired on 12/26/2012: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

North West Water Group plc.

GB

S. T. (pessoa física)

FR

United Utilities PLC

GB

See this company's full portfolio

Inventors

A. D. (pessoa física)

GB

M. T. (pessoa física)

GB

S. S. (pessoa física)

GB

Technical data

Priority claims

GB

8812217.1 · 05/24/1988

GB

8902649.6 · 02/07/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/04/1989

RPI 976

Carta-patente expirada

#21.1

Patente extinta em 30/05/2010

12/26/2012

RPI 2190

Concessão da patente

#16.1

05/30/2000

RPI 1534

Deferimento

#9.1

09/08/1999

RPI 1496

Transferência deferida

#25.1

Transferido de: United Utilities PLC.

05/18/1999

RPI 1480

Alteração de nome deferida

#25.4

Alterado de: North West Water Group PLC

03/16/1999

RPI 1471

Exigência - art. 36 da LPI

#6.1

09/29/1998

RPI 1449

Exigência - art. 36 da LPI

#6.1

11/11/1997

RPI 1406

Conhecimento de parecer técnico

#7.1

09/10/1996

RPI 1345

14.1

07/02/1996

RPI 1335

Solicitação de exame técnico

#4.1

04/21/1992

RPI 1116

Publicação do pedido de patente

#3.1

01/23/1990

RPI 1003

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