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Official data from INPI

ESTRUTURA DE FILTRO, FILTRO COMPÓSITO, E, PROCESSO DE FORMAÇÃO DE UMA ESTRUTURA DE FILTRO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004791

Type

Invention Patent

Filing

09/25/1990

Publication

09/10/1991

Progress at the INPI

  1. Filing09/25/90
  2. Publication09/10/91
  3. Examination09/08/93
  4. Allowance10/24/00
  5. Grant02/06/01
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cigarette Components Limited

GB

See this company's full portfolio

Inventors

E. H. (pessoa física)

GB

J. C. (pessoa física)

GB

P. C. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

89 21659.2 · 09/26/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 06/02/2011

05/21/2013

RPI 2211

Concessão da patente

#16.1

02/06/2001

RPI 1570

Deferimento

#9.1

10/24/2000

RPI 1555

Exigência - art. 36 da LPI

#6.1

05/05/1998

RPI 1428

Solicitação de exame técnico

#4.1

09/08/1993

RPI 1188

Publicação do pedido de patente

#3.1

09/10/1991

RPI 1084

Pedido de patente depositado

#2.1

03/26/1991

RPI 1060

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