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Official data from INPI

FILTRO PARA CIGARRO

Em AnáliseInvention Patent

Application data

Number

PI8704271

Type

Invention Patent

Filing

08/19/1987

Publication

04/12/1988

Progress at the INPI

  1. Filing08/19/87
  2. Publication04/12/88
  3. Examination07/19/88
  4. Allowance03/14/95
  5. Grant09/26/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 07/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Brown & Williamson Tobacco Corporation

US

See this company's full portfolio

Inventors

A. M. (pessoa física)

US

C. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

899.590 · 08/25/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/19/1988

RPI 926

Publicação do pedido de patente

#3.1

04/12/1988

RPI 912

Pedido de patente depositado

#2.1

11/10/1987

RPI 890

Carta-patente expirada

#21.1

Patente extinta em 19/08/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

09/26/1995

RPI 1295

Deferimento

#9.1

03/14/1995

RPI 1267

Exigência - art. 36 da LPI

#6.1

06/16/1992

RPI 1124

Exigência - art. 36 da LPI

#6.1

12/10/1991

RPI 1097

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