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Official data from INPI

APERFEICOAMENTO EM PROCESSO PARA A PRODUCAO DE UMA LIGA DE ALUMINIO E SILICIO COM UM TERCEIRO METAL SELECIONADO DO GRUPO QUE CONSISTE DE METAIS DE TERRAS RARAS E UM METAL DOS GRUPOS 4B,5,E 6B DA TABELA PERIODICA E COPOSICAO DE LIGA

ArquivadaInvention Patent
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Application data

Number

PI7708447

Type

Invention Patent

Filing

12/23/1976

Publication

-
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Progress at the INPI

  1. Filing12/23/76
  2. Publication
  3. Examination
  4. Allowance05/31/83
  5. Grant
  6. Terminated09/21/93

The patent was granted and later terminated. Protection ended before the full term and the technology is in the public domain in Brazil.

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Latest action published by the INPI: 03/20/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MOLYCORP INC

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

03/20/1984

RPI 700

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/31/1983

RPI 658

Exigência - art. 36 da LPI

#6.1

01/19/1982

RPI 587

21.4

11/03/1993

RPI 1196

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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