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Official data from INPI

PROCESSO E DISPOSITIVO PARA PREPARAÇÃO DE SALMOURA

Arquivada/ExtintaInvention Patent
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Application data

Number

PI9103362

Type

Invention Patent

Filing

08/05/1991

Publication

05/05/1992
View on INPI

Progress at the INPI

  1. Filing08/05/91
  2. Publication05/05/92
  3. Examination10/06/92
  4. Allowance04/06/99
  5. Grant08/10/99
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Eka Nobel AB.,

SE

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Inventors

M. T. (pessoa física)

US

Technical data

IPC Classification

C01D 3/04

Priority claims

US

564,202 · 08/08/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 05/08/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

08/10/1999

RPI 1492

Deferimento

#9.1

04/06/1999

RPI 1474

Exigência - art. 36 da LPI

#6.1

11/17/1998

RPI 1454

Solicitação de exame técnico

#4.1

10/06/1992

RPI 1140

Publicação do pedido de patente

#3.1

05/05/1992

RPI 1118

Pedido de patente depositado

#2.1

11/12/1991

RPI 1093

Pedido de patente depositado

#2.1

09/24/1991

RPI 1086

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