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Official data from INPI

SEPARADOR AUTO-PURGADOR

Em ExigênciaInvention Patent

Application data

Number

PI8500440

Type

Invention Patent

Filing

01/31/1985

Publication

09/17/1985

Progress at the INPI

  1. Filing01/31/85
  2. Publication09/17/85
  3. Examination03/24/87
  4. Allowance02/13/90
  5. Grant09/25/90
  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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Claude C. Laval, Jr.,

US

Inventors

C. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

578.779 · 02/09/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

03/24/1987

RPI 857

Publicação do pedido de patente

#3.1

09/17/1985

RPI 778

Pedido de patente depositado

#2.1

04/23/1985

RPI 757

Carta-patente expirada

#21.1

Patente extinta em 31/01/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

09/25/1990

RPI 1034

Notificação para pagamento de retribuição

#13.1

06/05/1990

RPI 1021

Deferimento

#9.1

02/13/1990

RPI 1006

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