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Official data from INPI

ESTRUTURA DE MEMBRANA TERMOPLÁSTICA POROSA E SEU PROCESSO DE PRODUÇÃO

ArquivadaInvention Patent

Application data

Number

PI9200814

Type

Invention Patent

Filing

03/10/1992

Publication

12/01/1992

Progress at the INPI

  1. Filing03/10/92
  2. Publication12/01/92
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 03/10/1992 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/26/1995. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

North West Water Group plc.

DE

See this company's full portfolio

Inventors

R. B. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

9105049.2 · 03/11/1991

GB

9118891.2 · 09/04/1991

GB

9204273.8 · 02/28/1992

Abstract

Uma estrutura de membrana termoplástica porosa possuindo, na ausência de uma camada superficial externa, uma porosidade geralmente uniforme, esta estrutura de membrana sendo capaz de suportar uma pressão de ruptura mínima maior do que 5 bar.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

09/26/1995

RPI 1295

14.11

12/20/1994

RPI 1255

14.1

10/11/1994

RPI 1245

Publicação do pedido de patente

#3.1

12/01/1992

RPI 1148

Pedido de patente depositado

#2.1

04/21/1992

RPI 1116

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