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Official data from INPI

PROCESSO PARA REMOVER IMPUREZAS EM PARTICULAS DE UM LEITO DE RESINAS TROCADORAS DE IONS

Em AnáliseInvention Patent

Application data

Number

PI7701271

Type

Invention Patent

Filing

03/03/1976

Publication

-

Progress at the INPI

  1. Filing03/03/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/29/81
  6. Terminated08/20/85

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: 08/20/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ECODYNE CORP

Inventors

F. G. (pessoa física)

S. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

08/20/1985

RPI 774

Cessão de direito de exploração

#22.1

12/04/1984

RPI 737

Concessão da patente

#16.1

12/29/1981

RPI 584

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