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Official data from INPI

FILTRO PARA CIGARRO

ConcedidaInvention Patent

Application data

Number

PI8303251

Type

Invention Patent

Filing

06/20/1983

Publication

02/07/1984

Progress at the INPI

  1. Filing06/20/83
  2. Publication02/07/84
  3. Examination05/22/84
  4. Allowance08/02/88
  5. Grant04/25/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Brown & Williamsom Tobacco Corporation

US

Brown & Williamson Tobacco Corporation

US

Inventors

L. G. (pessoa física)

P. S. (pessoa física)

Technical data

IPC Classification

Priority claims

US

391.024 · 06/22/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/25/1989

RPI 966

Notificação para pagamento de retribuição

#13.1

11/29/1988

RPI 945

Deferimento

#9.1

08/02/1988

RPI 928

6.2

07/21/1987

RPI 874

Solicitação de exame técnico

#4.1

05/22/1984

RPI 709

Publicação do pedido de patente

#3.1

02/07/1984

RPI 694

Pedido de patente depositado

#2.1

08/02/1983

RPI 667

Carta-patente expirada

#21.1

Patente extinta em 20/06/98

07/01/2008

RPI 1956

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