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Official data from INPI

LIGA DE MAGNESIO E ARTIGO FUNDIDO COMPOSTO DA MESMA

Em AnáliseInvention Patent
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Application data

Number

PI7903415

Type

Invention Patent

Filing

05/31/1978

Publication

-
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Progress at the INPI

  1. Filing05/31/78
  2. Publication
  3. Examination01/12/82
  4. Allowance02/12/85
  5. Grant07/30/85
  6. Expired07/26/94

The letters patent expired on 07/26/1994: 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: 08/26/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MAGNESIUM ELEKTRON LTD

Inventors

K. J. (pessoa física)

U. W. (pessoa física)

Technical data

IPC Classification

C22C 23/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

08/26/1986

RPI 827

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

10/09/1984

RPI 729

Exigência - art. 36 da LPI

#6.1

05/08/1984

RPI 707

Exigência - art. 36 da LPI

#6.1

12/06/1983

RPI 685

Solicitação de exame técnico

#4.1

01/12/1982

RPI 586

Carta-patente expirada

#21.1

07/26/1994

RPI 1234

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