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Official data from INPI

PROCESSO PARA PRODUÇÃO CARBOTÉRMICA DE UMA LIGA DE ALUMÍNIO SILÍCIO.

Em AnáliseInvention Patent

Application data

Number

PI7705858

Type

Invention Patent

Filing

09/01/1977

Publication

-

Progress at the INPI

  1. Filing09/01/77
  2. Publication
  3. Examination
  4. Allowance06/22/82
  5. Grant
  6. Terminated12/15/87

The patent was granted and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ALUMINIUM COMPANY OF AMÉRICA

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Notificação para pagamento de retribuição

#13.1

10/05/1982

RPI 624

Deferimento

#9.1

06/22/1982

RPI 609

Exigência - art. 36 da LPI

#6.1

11/03/1981

RPI 576

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