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Official data from INPI

PROCESSO PARA EFETUACAO DE SEPARACAO MAGNETICA DE PARTICULAS DESCORANTES MAGNETICAMENTE ATRAIVEIS DE UMA SUSPENSAO AQUOSA DE ARGILA

Em AnáliseInvention Patent

Application data

Number

PI7706774

Type

Invention Patent

Filing

10/12/1976

Publication

-

Progress at the INPI

  1. Filing10/12/76
  2. Publication
  3. Examination
  4. Allowance05/04/82
  5. Grant11/30/82
  6. Terminated12/15/87

The patent was granted on 11/30/1982 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: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HUBER CORP J M

See this company's full portfolio

Inventors

O. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/04/1982

RPI 602

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