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Official data from INPI

COMPOSIÇÃO ANTIESPUMA ISENTA DE CARGA MINERAL E PROCESSO PARA DIMINUIR E/OU IMPEDIR A ESPUMAGEM DE UM SISTEMA ESPUMANTE

PublicadaInvention Patent

Application data

Number

PI8806550

Type

Invention Patent

Filing

12/08/1988

Publication

08/22/1989

Progress at the INPI

  1. Filing12/08/88
  2. Publication08/22/89
  3. Examination09/03/91
  4. Allowance09/08/98
  5. Grant12/29/98
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhodia Brasil LTDA

SP, BR

Rhodia S/A

SP, BR

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Inventors

C. A. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

87/17.368 · 12/08/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/22/1989

RPI 983

Pedido de patente depositado

#2.1

04/18/1989

RPI 965

Carta-patente expirada

#21.1

Patente extinta em 29/12/2008

12/18/2012

RPI 2189

Alteração de nome deferida

#25.4

Alterado de: Rhodia S/A

05/30/2000

RPI 1534

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

09/08/1998

RPI 1446

Exigência - art. 36 da LPI

#6.1

04/07/1998

RPI 1424

Solicitação de exame técnico

#4.1

09/03/1991

RPI 1083

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