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Official data from INPI

PROCESSO DE DE PREPARAÇÃO DE ÓXIDOS CÉRICOS

PublicadaInvention Patent
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Application data

Number

PI8701982

Type

Invention Patent

Filing

03/26/1987

Publication

01/12/1988
View on INPI

Progress at the INPI

  1. Filing03/26/87
  2. Publication01/12/88
  3. Examination08/21/90
  4. Allowance07/12/94
  5. Grant01/31/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 01/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhodia S/A

SP, BR

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Inventors

J. L. (pessoa física)

FR

J. C. (pessoa física)

FR

P. D. (pessoa física)

FR

Technical data

IPC Classification

C01F 17/00

Priority claims

FR

86/04347 · 03/26/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/12/1988

RPI 899

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Carta-patente expirada

#21.1

Patente extinta em 26/03/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

01/31/1995

RPI 1261

Notificação para pagamento de retribuição

#13.1

11/08/1994

RPI 1249

Deferimento

#9.1

07/12/1994

RPI 1232

Exigência - art. 36 da LPI

#6.1

07/20/1993

RPI 1181

Exigência - art. 36 da LPI

#6.1

10/27/1992

RPI 1143

Exigência - art. 36 da LPI

#6.1

11/26/1991

RPI 1095

Solicitação de exame técnico

#4.1

08/21/1990

RPI 1029

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