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Official data from INPI

processo para a separação e fracionamento de sólidos em suspensão mediante hidrociclones, e dispositivo para sua execução.

Em AnáliseInvention Patent

Application data

Number

PI7703277

Type

Invention Patent

Filing

05/20/1977

Publication

-

Progress at the INPI

  1. Filing05/20/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Terminated08/28/90

The patent was granted 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: 01/12/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Amberger Kaolinwerke GmbH

DE

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

01/12/1982

RPI 586

Anuidade - prazo legal encerrado

#18.2

08/28/1990

RPI 1030

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