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Official data from INPI

LIGA DE ALUMINIO E SUAS APLICACOES

ConcedidaInvention Patent
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Application data

Number

PI7901690

Type

Invention Patent

Filing

03/20/1978

Publication

-
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Progress at the INPI

  1. Filing03/20/78
  2. Publication
  3. Examination
  4. Allowance04/08/86
  5. Grant10/29/86
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 10/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CEGEDUR

C. F. (pessoa física)

Inventors

B. F. (pessoa física)

D. M. (pessoa física)

M. D. (pessoa física)

R. R. (pessoa física)

Technical data

IPC Classification

C22C 21/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1986

RPI 836

Notificação para pagamento de retribuição

#13.1

08/12/1986

RPI 825

Deferimento

#9.1

04/08/1986

RPI 807

Exigência - art. 36 da LPI

#6.1

06/25/1985

RPI 766

Exigência - art. 36 da LPI

#6.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

03/23/1982

RPI 596

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

20.4

04/28/1992

RPI 1117

20.4

04/21/1992

RPI 1116

20.7

04/21/1992

RPI 1116

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