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Official data from INPI

PROCESSO PARA REDUZIR A FORMACAO DE DEPOSITOS NO CATODO POR ELETROLISE DE SOLUCOES SALINAS AQUOSAS IMPURAS

Em AnáliseInvention Patent

Application data

Number

PI7602854

Type

Invention Patent

Filing

05/07/1975

Publication

-

Progress at the INPI

  1. Filing05/07/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant01/26/82
  6. Terminated11/17/87

The patent was granted on 01/26/1982 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: 11/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DIAMOND SHAMROCK CORP

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Inventors

B. J. (pessoa física)

E. J. (pessoa física)

S. N. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/17/1987

RPI 891

Pedido de licença compulsória

#20.1

06/17/1986

RPI 817

20.7

06/17/1986

RPI 817

20.4

06/03/1986

RPI 815

20.4

05/27/1986

RPI 814

Concessão da patente

#16.1

01/26/1982

RPI 588

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