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Official data from INPI

ELETRODO FORAMINOSO, CÉLULA ELETROLÍTICA, MÉTODO PARA A RENOVAÇÃO DE UM ELETRODO E MÉTODO DE ELETRÓLISE DE UMA SOLUÇÃO AQUOSA DE HALOGENETO DE METAL ALCALINO

Em AnáliseInvention Patent

Application data

Number

PI8502573

Type

Invention Patent

Filing

05/30/1985

Publication

01/06/1987

Progress at the INPI

  1. Filing05/30/85
  2. Publication01/06/87
  3. Examination02/21/89
  4. Allowance09/21/93
  5. Grant03/29/94
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

De Nora Permelec S.p.A

IT

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Inventors

O. N. (pessoa física)

IT

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.4

12/05/1989

RPI 998

Solicitação de exame técnico

#4.1

02/21/1989

RPI 957

Publicação do pedido de patente

#3.1

01/06/1987

RPI 846

Pedido de patente depositado

#2.1

08/06/1985

RPI 772

Carta-patente expirada

#21.1

Patente extinta em 30/05/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

03/29/1994

RPI 1217

Deferimento

#9.1

09/21/1993

RPI 1190

Exigência - art. 36 da LPI

#6.1

01/19/1993

RPI 1155

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