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Official data from INPI

PROCESSO E DISPOSITIVO PARA COLETAR SUBSTANCIAS LEVES ESPARSAS EM FLUTUACAO

Em AnáliseInvention Patent

Application data

Number

PI7603693

Type

Invention Patent

Filing

06/09/1976

Publication

-

Progress at the INPI

  1. Filing06/09/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/29/81
  6. Terminated11/17/87

The patent was granted on 12/29/1981 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: 11/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BALLAST NEDAM GROEP NV

SKIMOVEX BV

Inventors

M. C. (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

Concessão da patente

#16.1

12/29/1981

RPI 584

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