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Official data from INPI

FORNO A VÁCUO PARA PRODUÇÃO DE MAGNÉSIO

Em AnáliseInvention Patent
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Application data

Number

PI8602495

Type

Invention Patent

Filing

05/23/1986

Publication

08/19/1986
View on INPI

Progress at the INPI

  1. Filing05/23/86
  2. Publication08/19/86
  3. Examination10/14/86
  4. Allowance11/12/91
  5. Grant10/27/92
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 10/14/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Brasmag - Cia Brasileira de Magnésio

MG, BR

Inventors

V. A. (pessoa física)

Technical data

IPC Classification

C22B 26/22C22B 5/16

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/14/1986

RPI 834

Pedido de patente depositado

#2.1

08/19/1986

RPI 826

Publicação antecipada

#3.2

08/19/1986

RPI 826

Carta-patente expirada

#21.1

Patente extinta em 23/05/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/27/1992

RPI 1143

Notificação para pagamento de retribuição

#13.1

03/31/1992

RPI 1113

Deferimento

#9.1

11/12/1991

RPI 1093

Exigência - art. 36 da LPI

#6.1

05/28/1991

RPI 1069

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