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Official data from INPI

PROCESSO APERFEIÇOADO PARA TRATAMENTO DE TABACO

Em ExigênciaInvention Patent

Application data

Number

PI8406431

Type

Invention Patent

Filing

12/14/1984

Publication

10/15/1985

Progress at the INPI

  1. Filing12/14/84
  2. Publication10/15/85
  3. Examination03/04/86
  4. Allowance02/01/90
  5. Grant08/28/90
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 10/17/1989. 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. W. (pessoa física)

K. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

566.750 · 12/16/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

10/17/1989

RPI 991

6.2

07/26/1988

RPI 927

Solicitação de exame técnico

#4.1

03/04/1986

RPI 802

Publicação do pedido de patente

#3.1

10/15/1985

RPI 782

Pedido de patente depositado

#2.1

03/05/1985

RPI 750

Carta-patente expirada

#21.1

Patente extinta em 14/12/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

08/28/1990

RPI 1030

Notificação para pagamento de retribuição

#13.1

05/22/1990

RPI 1019

Deferimento

#9.1

02/01/1990

RPI 1004

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