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Official data from INPI

PROCESSO ELETROMETALURGICO PARA RECUPERACAO SOB A FORMA DE CARBONATOS DOS ALCALIS CONTIDOS EM MINERIOS

ConcedidaInvention Patent

Application data

Number

PI7705509

Type

Invention Patent

Filing

08/18/1977

Publication

-

Progress at the INPI

  1. Filing08/18/77
  2. Publication
  3. Examination
  4. Allowance11/16/82
  5. Grant05/31/83
  6. Terminated01/21/92

The patent was granted on 05/31/1983 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: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

FERMAT CO MATOGROSSENSE FERRO

Inventors

S. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

03/22/1983

RPI 648

Deferimento

#9.1

11/16/1982

RPI 630

Exigência - art. 36 da LPI

#6.1

03/16/1982

RPI 595

Anuidade - prazo legal encerrado

#18.2

01/21/1992

RPI 1103

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