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Official data from INPI

COMPOSICOES FLUIDAS METALURGICAS E METODOS DE AS ESTABILIZAR

ConcedidaInvention Patent
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Application data

Number

PI7705779

Type

Invention Patent

Filing

09/01/1976

Publication

-
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Progress at the INPI

  1. Filing09/01/76
  2. Publication
  3. Examination
  4. Allowance09/30/86
  5. Grant08/25/87
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. L. (pessoa física)

Inventors

M. G. (pessoa física)

S. S. (pessoa física)

Technical data

IPC Classification

C10M 1/26C10N 40/22C10N 40/24

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Notificação para pagamento de retribuição

#13.1

03/04/1987

RPI 854

Deferimento

#9.1

09/30/1986

RPI 832

Exigência - art. 36 da LPI

#6.1

07/26/1983

RPI 666

Exigência - art. 36 da LPI

#6.1

09/14/1982

RPI 621

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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