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Official data from INPI

PROCESSO PARA LIMPAR ELEMENTOS DE FILTRO E APARELHO PARA EXTRACAO DE POEIRA POR ASPIRACAO

Em AnáliseInvention Patent

Application data

Number

PI7804539

Type

Invention Patent

Filing

07/15/1977

Publication

-

Progress at the INPI

  1. Filing07/15/77
  2. Publication
  3. Examination
  4. Allowance07/12/83
  5. Grant01/31/84
  6. Terminated10/03/89

The patent was granted on 01/31/1984 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BUEHLER AG GEB

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Inventors

B. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

11/08/1983

RPI 681

Deferimento

#9.1

07/12/1983

RPI 664

Exigência - art. 36 da LPI

#6.1

10/19/1982

RPI 626

6.2

01/19/1982

RPI 587

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