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Official data from INPI

APERFEIÇOAMENTOS EM SEPARADOR PNEUMÁTICO PARA FUMO DEBULHADO E OUTROS PRODUTOS SIMILARES

Em AnáliseInvention Patent

Application data

Number

PI8701641

Type

Invention Patent

Filing

04/08/1987

Publication

10/18/1988

Progress at the INPI

  1. Filing04/08/87
  2. Publication10/18/88
  3. Examination01/03/89
  4. Allowance04/14/92
  5. Grant03/30/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 01/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Souza Cruz S/A

RJ, BR

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Inventors

A. L. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

01/03/1989

RPI 950

Publicação do pedido de patente

#3.1

10/18/1988

RPI 939

Pedido de patente depositado

#2.1

07/14/1987

RPI 873

Carta-patente expirada

#21.1

Patente extinta em 08/04/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

03/30/1993

RPI 1165

Notificação para pagamento de retribuição

#13.1

09/15/1992

RPI 1137

Deferimento

#9.1

04/14/1992

RPI 1115

Exigência - art. 36 da LPI

#6.1

09/10/1991

RPI 1084

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