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Official data from INPI

CELULA ELETROLITICA DE CLORO-ALCALI,OU CONJUNTO DE CELULAS,E PROCESSO PARA PRODUCAO DE HIDROGENIO,HIDROXIDO DE METAL ALCALINO AQUOSO E CLORO GASOSO

Em AnáliseInvention Patent

Application data

Number

PI7904450

Type

Invention Patent

Filing

07/13/1978

Publication

-

Progress at the INPI

  1. Filing07/13/78
  2. Publication
  3. Examination
  4. Allowance
  5. Grant06/28/83
  6. Terminated10/03/89

The patent was granted on 06/28/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

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Inventors

E. B. (pessoa física)

S. M. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

05/24/1983

RPI 657

Conhecimento de parecer técnico

#7.1

03/16/1982

RPI 595

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