Official data from INPI

Revestimento refratário helicóidal para convertedor.

DeferidaInvention Patent

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Application data

Number

PI8402257

Type

Invention Patent

Filing

05/14/1984

Publication

12/24/1985

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Progress at the INPI

Under appeal

Filing05/14/84
Publication12/24/85
Examination11/11/86
Refused03/26/91
Grant
In force

The application was refused by the INPI on 03/26/1991. The invention was never patented.

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Latest action published by the INPI: 06/13/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cimetal Siderurgia S/A

Inventors

S. M. (pessoa física)

Technical data

IPC Classification

C21C 5/44

Priority claims

84.10186 · 06/25/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

06/13/1989

RPI 973

Solicitação de exame técnico

#4.1

11/11/1986

RPI 838

Publicação do pedido de patente

#3.1

12/24/1985

RPI 792

Pedido de patente depositado

#2.1

07/24/1984

RPI 718

Indeferimento

#9.2

03/26/1991

RPI 1060

Conhecimento de parecer técnico

#7.1

06/05/1990

RPI 1021

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