Official data from INPI

PROCESSO PARA A RECUPERACAO DE UM OU MAIS DOS VALORES DE METAL FERRO,COBALTO,NIQUEL,COBRE,MANGANES,MAGNESIO,CROMO,ALUMINIO,BERILIO,C ADMIO,INDIO TITANIO E ZINCO,DE UMA SOLUCAO SULFATADA

Em AnáliseInvention Patent

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Application data

Number

PI7601977

Type

Invention Patent

Filing

04/02/1975

Publication

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Progress at the INPI

Filing04/02/75
Publication
Examination
Allowance
Grant
Terminated11/17/87

The patent was granted 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

I. C. (pessoa física)

Inventors

H. R. (pessoa física)

J. W. (pessoa física)

O. C. (pessoa física)

W. J. (pessoa física)

Technical data

IPC Classification

C22B 3/00 C22B 34/12 C22B 34/32 C22B 47/00 C22B 58/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/17/1987

RPI 891

20.7

09/20/1983

RPI 674

20.4

09/13/1983

RPI 673

16.3

05/11/1982

RPI 603

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