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Official data from INPI

CÉLULA ELETROLÍTICA, PROCESSO PARA ELETRÓLISE DE UMA SOLUÇÃO AQUOSA DE UM CLORETO DE METAL ALCALINO, E MEMBRANA TROCADORA DE ÍON.

ConcedidaInvention Patent

Application data

Number

PI8007712

Type

Invention Patent

Filing

11/26/1980

Publication

-

Progress at the INPI

  1. Filing11/26/80
  2. Publication
  3. Examination03/23/82
  4. Allowance07/14/87
  5. Grant11/24/87
  6. Terminated08/09/94

The patent was granted on 11/24/1987 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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Asahi Glass Company Ltd.

JP

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Inventors

K. S. (pessoa física)

T. M. (pessoa física)

Y. O. (pessoa física)

Technical data

IPC Classification

Priority claims

JP

152416/79 · 11/27/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/24/1987

RPI 892

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

11/18/1986

RPI 839

Republicação - classificação IPC

#15.11

02/28/1984

RPI 697

Conhecimento de parecer técnico

#7.1

01/17/1984

RPI 691

Solicitação de exame técnico

#4.1

03/23/1982

RPI 596

Anuidade - prazo legal encerrado

#18.2

08/09/1994

RPI 1236

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