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Official data from INPI

PROCESSO PARA SEPARAR UM COMPONENTE LÍQUIDO DE UMA SOLUÇÃO CONTENDO DOIS OU MAIS COMPONENTES LÍQUIDOS

Prazo de SigiloInvention Patent

Application data

Number

PI8902854

Type

Invention Patent

Filing

06/14/1989

Publication

03/27/1990

Progress at the INPI

  1. Filing06/14/89
  2. Publication03/27/90
  3. Examination06/16/92
  4. Allowance04/22/98
  5. Grant11/24/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Lignyte Co ,Ltd

JP

Inventors

T. U. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

63-148895 · 06/15/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/25/1989

RPI 979

Carta-patente expirada

#21.1

Patente extinta em 14/06/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

11/24/1998

RPI 1455

Republicação - classificação IPC

#15.11

Alterada a Classificação Int.Cl.4 B01D 13/00 para Int.Cl.6 B01D 61/36.

04/22/1998

RPI 1426

Deferimento

#9.1

04/22/1998

RPI 1426

Exigência - art. 36 da LPI

#6.1

12/24/1996

RPI 1360

Solicitação de exame técnico

#4.1

06/16/1992

RPI 1124

Publicação do pedido de patente

#3.1

03/27/1990

RPI 1011

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