Official data from INPI

PROCESSO PARA TRATAMENTO TERMICO APERFEICOADO DE ACOS USANDO AQUECIMENTO DIRETO A RESISTENCIA ELETRICA

IndeferidaInvention Patent

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Application data

Number

PI8107933

Type

Invention Patent

Filing

12/10/1980

Publication

09/14/1982

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Progress at the INPI

Under appeal

Filing12/10/80
Publication09/14/82
Examination02/08/83
Refused02/04/86
Grant
In force

The application was refused by the INPI on 02/04/1986. The invention was never patented.

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Latest action published by the INPI: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LASALLE STEEL CO [US]

Inventors

W. W. (pessoa física)

Technical data

IPC Classification

C21D 1/20

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

02/04/1986

RPI 798

Conhecimento de parecer técnico

#7.1

09/18/1984

RPI 726

Solicitação de exame técnico

#4.1

02/08/1983

RPI 642

Publicação do pedido de patente

#3.1

09/14/1982

RPI 621

Pedido de patente depositado

#2.1

01/26/1982

RPI 588

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