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Official data from INPI

FILTRO PARA CIGARRO

Em AnáliseInvention Patent

Application data

Number

PI8505691

Type

Invention Patent

Filing

11/12/1985

Publication

08/12/1986

Progress at the INPI

  1. Filing11/12/85
  2. Publication08/12/86
  3. Examination10/21/86
  4. Allowance01/26/93
  5. Grant06/29/93
  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 & Williamson Tobacco Corporation

US

See this company's full portfolio

Inventors

D. S. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

US

672.053 · 11/16/1984

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

01/21/1986

RPI 796

Carta-patente expirada

#21.1

Patente extinta em 12/11/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

05/11/1993

RPI 1171

Deferimento

#9.1

01/26/1993

RPI 1156

Exigência - art. 36 da LPI

#6.1

05/19/1992

RPI 1120

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