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Official data from INPI

MEMBRANA PERMEÁVEL PARA A SEPARAÇÃO SELETIVA DE UM OU MAIS COMPONENTES VOLÁTEIS DE UMA SOLUÇÃO LÍQUIDA

PublicadaInvention Patent
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Application data

Number

PI8805334

Type

Invention Patent

Filing

10/14/1988

Publication

05/30/1989
View on INPI

Progress at the INPI

  1. Filing10/14/88
  2. Publication05/30/89
  3. Examination07/23/91
  4. Allowance03/26/96
  5. Grant03/25/97
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. U. (pessoa física)

JP

Inventors

T. U. (pessoa física)

JP

Technical data

IPC Classification

C08J 5/22

Priority claims

JP

62-260067 · 10/15/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/30/1989

RPI 971

Pedido de patente depositado

#2.1

02/28/1989

RPI 958

Carta-patente expirada

#21.1

Patente extinta em 14/10/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

03/25/1997

RPI 1373

Deferimento

#9.1

03/26/1996

RPI 1321

Exigência - art. 36 da LPI

#6.1

09/19/1995

RPI 1294

Exigência - art. 36 da LPI

#6.1

02/21/1995

RPI 1264

Solicitação de exame técnico

#4.1

07/23/1991

RPI 1077

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