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Official data from INPI

PROCESSO PARA REGENERACAO EXTERNA DE RESINAS PERMUTADORAS DE ANIONS E CATIONS ESGOTADAS DO FILTRO DE UM LEITO DE MISTURA

Em AnáliseInvention Patent

Application data

Number

PI7704573

Type

Invention Patent

Filing

07/13/1976

Publication

-

Progress at the INPI

  1. Filing07/13/76
  2. Publication
  3. Examination
  4. Allowance03/02/82
  5. Grant08/30/83
  6. Terminated07/12/88

The patent was granted on 08/30/1983 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STEINMUELLER GMBH L & C

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Inventors

W. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

07/12/1988

RPI 925

Concessão da patente

#16.1

08/30/1983

RPI 671

Notificação para pagamento de retribuição

#13.1

06/22/1982

RPI 609

Deferimento

#9.1

03/02/1982

RPI 593

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