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Official data from INPI

PROCESSO PARA A REDUÇÃO DO TEOR DE PERCLORATO EM ELETROLITOS PARA A PRODUÇÃO DE CLORATO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8906742

Type

Invention Patent

Filing

12/26/1989

Publication

09/18/1990

Progress at the INPI

  1. Filing12/26/89
  2. Publication09/18/90
  3. Examination12/11/90
  4. Allowance10/28/97
  5. Grant07/28/98
  6. Expired01/02/13

The letters patent expired on 01/02/2013: 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: 01/02/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Eka Nobel AB

SE

See this company's full portfolio

Inventors

C. W. (pessoa física)

SE

Technical data

IPC Classification

Priority claims

SE

8804675-0 · 12/28/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 26/12/2009

01/02/2013

RPI 2191

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

10/28/1997

RPI 1404

Exigência - art. 36 da LPI

#6.1

12/24/1996

RPI 1360

Solicitação de exame técnico

#4.1

12/11/1990

RPI 1045

Publicação do pedido de patente

#3.1

09/18/1990

RPI 1033

Pedido de patente depositado

#2.1

04/03/1990

RPI 1012

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