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Official data from INPI

CELULA ELETROLITICA CLORO-ALCALINA;CELULA DE PRENSA-FILTRO;PROCESSO DE RECIRCULACAO DE ELETROLITO

Em AnáliseInvention Patent

Application data

Number

PI8107935

Type

Invention Patent

Filing

12/08/1980

Publication

09/14/1982

Progress at the INPI

  1. Filing12/08/80
  2. Publication09/14/82
  3. Examination04/19/83
  4. Allowance09/18/84
  5. Grant03/26/85
  6. Terminated06/21/88

The patent was granted on 03/26/1985 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: 06/21/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

OLIN CORP [US]

See this company's full portfolio

Inventors

M. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/21/1988

RPI 922

Concessão da patente

#16.1

03/26/1985

RPI 753

Deferimento

#9.1

09/18/1984

RPI 726

Exigência - art. 36 da LPI

#6.1

03/27/1984

RPI 701

Solicitação de exame técnico

#4.1

04/19/1983

RPI 652

Publicação do pedido de patente

#3.1

09/14/1982

RPI 621

Pedido de patente depositado

#2.1

01/26/1982

RPI 588

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