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Official data from INPI

APARELHO PARA TRATAMENTO DE PARTÍCULAS DE TABACO.

Em ExigênciaInvention Patent

Application data

Number

PI8405136

Type

Invention Patent

Filing

10/11/1984

Publication

08/27/1985

Progress at the INPI

  1. Filing10/11/84
  2. Publication08/27/85
  3. Examination01/21/86
  4. Allowance04/10/90
  5. Grant09/25/90
  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

K. K. (pessoa física)

US

R. F. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

541.752 · 10/13/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

10/17/1989

RPI 991

6.2

08/02/1988

RPI 928

Solicitação de exame técnico

#4.1

01/21/1986

RPI 796

Publicação do pedido de patente

#3.1

08/27/1985

RPI 775

Pedido de patente depositado

#2.1

12/26/1984

RPI 740

Carta-patente expirada

#21.1

Patente extinta em 11/10/99

07/08/2008

RPI 1957

Republicação - classificação IPC

#15.11

09/17/1991

RPI 1085

Concessão da patente

#16.1

09/25/1990

RPI 1034

Notificação para pagamento de retribuição

#13.1

08/14/1990

RPI 1028

Deferimento

#9.1

04/10/1990

RPI 1013

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