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Official data from INPI

FILTRO PARA FUMAÇA DE TABACO APERFEIÇOADO E PROCESSO DE FABRICAÇÃO DO MESMO

Em AnáliseInvention Patent

Application data

Number

PI8505559

Type

Invention Patent

Filing

11/06/1985

Publication

08/12/1986

Progress at the INPI

  1. Filing11/06/85
  2. Publication08/12/86
  3. Examination10/21/86
  4. Allowance11/23/93
  5. Grant06/28/94
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 10/21/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Brown & Williamsom Tobacco Corporation

US

Inventors

C. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

670.110 · 11/09/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/21/1986

RPI 835

Publicação do pedido de patente

#3.1

08/12/1986

RPI 825

Pedido de patente depositado

#2.1

01/14/1986

RPI 795

Carta-patente expirada

#21.1

Patente extinta em 06/11/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

06/28/1994

RPI 1230

Deferimento

#9.1

11/23/1993

RPI 1199

Exigência - art. 36 da LPI

#6.1

03/02/1993

RPI 1161

Exigência - art. 36 da LPI

#6.1

11/12/1991

RPI 1093

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