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Official data from INPI

PROCESSO DE MEMBRANA ELETROLÍTICA PARA ELETRÓLISE DE UMA SOLUÇÃO CONTENDO HALOGÊNIO EM UMA CÉLULA DE MEMBRANA ELETROLÍTICA.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9006109

Type

Invention Patent

Filing

11/30/1990

Publication

09/24/1991

Progress at the INPI

  1. Filing11/30/90
  2. Publication09/24/91
  3. Examination12/14/93
  4. Allowance06/02/98
  5. Grant11/24/98
  6. Expired05/28/13

The letters patent expired on 05/28/2013: 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: 05/28/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. C. (pessoa física)

US

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Inventors

K. H. (pessoa física)

US

R. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

447.775 · 12/08/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 30/11/2010

05/28/2013

RPI 2212

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

06/02/1998

RPI 1432

Solicitação de exame técnico

#4.1

12/14/1993

RPI 1202

Publicação do pedido de patente

#3.1

09/24/1991

RPI 1086

Pedido de patente depositado

#2.1

05/14/1991

RPI 1067

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