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Official data from INPI

DISPOSITIVO DE RETENÇÃO DE POEIRA.

ConcedidaInvention Patent

Application data

Number

PI8000826

Type

Invention Patent

Filing

02/11/1979

Publication

-

Progress at the INPI

  1. Filing02/11/79
  2. Publication
  3. Examination12/21/82
  4. Allowance04/24/84
  5. Grant10/30/84
  6. Terminated07/26/94

The patent was granted on 10/30/1984 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: 10/30/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Barrett Burston Limited

Inventors

B. J. (pessoa física)

H. R. (pessoa física)

Technical data

IPC Classification

Priority claims

AU

PD 7654 · 02/12/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/30/1984

RPI 732

Notificação para pagamento de retribuição

#13.1

08/21/1984

RPI 722

Deferimento

#9.1

04/24/1984

RPI 705

Conhecimento de parecer técnico

#7.1

11/22/1983

RPI 683

Solicitação de exame técnico

#4.1

12/21/1982

RPI 635

Anuidade - prazo legal encerrado

#18.2

07/26/1994

RPI 1234

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