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Official data from INPI

SEPARADOR DE PARTÍCULAS APERFEIÇOADO

ConcedidaInvention Patent

Application data

Number

PI8501616

Type

Invention Patent

Filing

04/02/1985

Publication

07/16/1985

Progress at the INPI

  1. Filing04/02/85
  2. Publication07/16/85
  3. Examination12/17/85
  4. Allowance08/02/88
  5. Grant09/26/89
  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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Comercial e Industrial Petropasy Ltda.

SP, BR

Inventors

J. G. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

11/29/1988

RPI 945

Deferimento

#9.1

08/02/1988

RPI 928

Solicitação de exame técnico

#4.1

12/17/1985

RPI 791

Publicação antecipada

#3.2

07/16/1985

RPI 769

Pedido de patente depositado

#2.1

07/02/1985

RPI 767

Carta-patente expirada

#21.1

Patente extinta em 02/04/2000

07/15/2008

RPI 1958

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