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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE CLORETO DE MAGNÉSIO ANIDRO, E, APARELHO PARA PREPARÁ-LO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8906432

Type

Invention Patent

Filing

12/13/1989

Publication

08/28/1990

Progress at the INPI

  1. Filing12/13/89
  2. Publication08/28/90
  3. Examination12/26/90
  4. Allowance08/06/96
  5. Grant04/29/97
  6. Expired12/29/09

The letters patent expired on 12/29/2009: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Noranda Inc

CA

Noranda Metallurgy Inc

CA

Inventors

J. P. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

CA

585,796 · 12/13/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 13/12/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

04/29/1997

RPI 1378

Notificação para pagamento de retribuição

#13.1

03/25/1997

RPI 1373

Deferimento

#9.1

08/06/1996

RPI 1340

14.1

11/28/1995

RPI 1304

Exigência - art. 36 da LPI

#6.1

09/05/1995

RPI 1292

Solicitação de exame técnico

#4.1

12/26/1990

RPI 1047

Publicação do pedido de patente

#3.1

08/28/1990

RPI 1030

Pedido de patente depositado

#2.1

04/03/1990

RPI 1012

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