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Official data from INPI

PROCESSO PARA PRODUZIR UMA LIGA PREDOMINANTEMENTE DE FERRO CONTENDO MAGNÉSIO

Em AnáliseInvention Patent

Application data

Number

PI8304984

Type

Invention Patent

Filing

09/14/1983

Publication

09/04/1984

Progress at the INPI

  1. Filing09/14/83
  2. Publication09/04/84
  3. Examination11/27/84
  4. Allowance09/22/92
  5. Grant03/30/93
  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.

Talk to a specialist

Latest action published by the INPI: 05/09/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Elkem Metals Company

US

Inventors

J. I. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

418,238 · 09/15/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

05/09/1989

RPI 968

Exigência - art. 36 da LPI

#6.1

04/22/1986

RPI 809

Solicitação de exame técnico

#4.1

11/27/1984

RPI 736

Publicação do pedido de patente

#3.1

09/04/1984

RPI 724

Pedido de patente depositado

#2.1

11/08/1983

RPI 681

Carta-patente expirada

#21.1

Patente extinta em 14/09/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

03/30/1993

RPI 1165

Notificação para pagamento de retribuição

#13.1

02/02/1993

RPI 1157

Deferimento

#9.1

09/22/1992

RPI 1138

Exigência - art. 36 da LPI

#6.1

11/26/1991

RPI 1095

Exigência - art. 36 da LPI

#6.1

07/31/1990

RPI 1026

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