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Official data from INPI

PROCESSO PARA A SEPARAÇÃO DE POEIRA FINA QUE CONTÉM IMPUREZA, DA ALUMINA

ConcedidaInvention Patent
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Application data

Number

PI8200616

Type

Invention Patent

Filing

02/04/1982

Publication

09/16/1986
View on INPI

Progress at the INPI

  1. Filing02/04/82
  2. Publication12/14/82
  3. Examination03/26/85
  4. Allowance06/21/88
  5. Grant12/27/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A/S Norsk Viftefabrikk

NO

Inventors

O. B. (pessoa física)

NO

Technical data

IPC Classification

B01D 45/00B07B 7/04C01F 7/46

Priority claims

NO

810393 · 02/05/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1988

RPI 949

Notificação para pagamento de retribuição

#13.1

10/25/1988

RPI 940

Deferimento

#9.1

06/21/1988

RPI 922

Conhecimento de parecer técnico

#7.1

12/22/1987

RPI 896

Publicação do pedido de patente

#3.1

09/16/1986

RPI 830

Exigência - art. 36 da LPI

#6.1

10/22/1985

RPI 783

Solicitação de exame técnico

#4.1

03/26/1985

RPI 753

14.1

12/18/1984

RPI 739

Publicação do pedido de patente

#3.1

12/14/1982

RPI 634

Pedido de patente depositado

#2.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

Patente extinta em 04/02/97

07/01/2008

RPI 1956

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