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Official data from INPI

SUSPENSÃO AQUOSA ESTÁVEL DE SÍLICA A SER UTILIZADA N AINDÚSTRIA DE PAPEL.

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905892

Type

Invention Patent

Filing

11/08/1989

Publication

06/12/1990

Progress at the INPI

  1. Filing11/08/89
  2. Publication06/12/90
  3. Examination08/04/92
  4. Allowance11/10/98
  5. Grant06/29/99
  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: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhodia Brasil Ltda

SP, BR

Rhodia S/A

SP, BR

See this company's full portfolio

Inventors

A. D. (pessoa física)

FR

C. R. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

88/14.565 · 11/08/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 08/11/2009

12/26/2012

RPI 2190

Alteração de nome deferida

#25.4

Alterado de: Rhodia S/A

05/16/2000

RPI 1532

Concessão da patente

#16.1

06/29/1999

RPI 1486

Deferimento

#9.1

11/10/1998

RPI 1453

Exigência - art. 36 da LPI

#6.1

03/17/1998

RPI 1421

Solicitação de exame técnico

#4.1

08/04/1992

RPI 1131

Publicação do pedido de patente

#3.1

06/12/1990

RPI 1022

Pedido de patente depositado

#2.1

04/17/1990

RPI 1014

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