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Official data from INPI

ELETRODO DE POROSIDADE DUPLA E PROCESSO PARA OPERACAO DE CELULA ELETROLITICA

Em AnáliseInvention Patent

Application data

Number

PI8001601

Type

Invention Patent

Filing

03/18/1980

Publication

-

Progress at the INPI

  1. Filing03/18/80
  2. Publication
  3. Examination09/20/83
  4. Allowance01/15/85
  5. Grant07/30/85
  6. Terminated09/26/89

The patent was granted on 07/30/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

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Inventors

L. J. (pessoa física)

M. J. (pessoa física)

P. R. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/07/1985

RPI 759

Deferimento

#9.1

01/15/1985

RPI 743

Exigência - art. 36 da LPI

#6.1

07/10/1984

RPI 716

Exigência - art. 36 da LPI

#6.1

03/07/1984

RPI 698

Solicitação de exame técnico

#4.1

09/20/1983

RPI 674

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