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Official data from INPI

PROCESSO PARA RECUPERAR PARTICULAS MAGNETICAS DE MEIO DENSO A PARTIR DE UMA SUSPENSAO

ConcedidaInvention Patent

Application data

Number

PI7605203

Type

Invention Patent

Filing

08/08/1975

Publication

-

Progress at the INPI

  1. Filing08/08/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant02/24/82
  6. Terminated09/18/90

The patent was granted on 02/24/1982 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: 02/24/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ANGLO AMER CORP SOUTH AFRICA

Inventors

H. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/24/1982

RPI 592

Anuidade - prazo legal encerrado

#18.2

09/18/1990

RPI 1033

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