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Official data from INPI

PROCESSO PARA DESCARGA COM BAIXO TEOR DE POEIRA, DE MATERIAL EM PARTÍCULAS, ATRAVÉS DE UM BOCAL E RESPECTIVO BOCAL.

Em AnáliseInvention Patent

Application data

Number

PI7905808

Type

Invention Patent

Filing

09/11/1979

Publication

-

Progress at the INPI

  1. Filing09/11/79
  2. Publication
  3. Examination04/27/82
  4. Allowance12/20/83
  5. Grant08/14/84
  6. Terminated05/17/88

The patent was granted on 08/14/1984 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: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. B. (pessoa física)

Inventors

A. J. (pessoa física)

B. W. (pessoa física)

Technical data

IPC Classification

Priority claims

US

941.382 · 09/12/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

Concessão da patente

#16.1

08/14/1984

RPI 721

Notificação para pagamento de retribuição

#13.1

04/17/1984

RPI 704

Deferimento

#9.1

12/20/1983

RPI 687

Exigência - art. 36 da LPI

#6.1

06/28/1983

RPI 662

Solicitação de exame técnico

#4.1

04/27/1982

RPI 601

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