Official data from INPI

Processo e dispositivo para espumar escórias metalúrgicas em fusão.

Em AnáliseInvention Patent

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Application data

Number

PI7707645

Type

Invention Patent

Filing

11/16/1977

Publication

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Progress at the INPI

Filing11/16/77
Publication
Examination
Allowance06/01/82
Grant
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

Aciéries Réunies de Burbach-eich Dudelange S/S

Inventors

No inventors listed.

Technical data

IPC Classification

C21B 3/06

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

09/21/1982

RPI 622

Deferimento

#9.1

06/01/1982

RPI 606

15.0

01/19/1982

RPI 587

Exigência - art. 36 da LPI

#6.1

12/22/1981

RPI 583

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