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Official data from INPI

PROCESSO PARA SELEÇAO DAS QUALIDADES E QUANTIDADES MAIS ECONÔMICAS DOS MATERIAIS PARA ADIÇAO NA PANELA DE VAZAMENTO NO PROCESSO LD DE FABRICAÇAO DE AÇO

IndeferidaInvention Patent

Application data

Number

PI8202829

Type

Invention Patent

Filing

05/17/1982

Publication

12/20/1983

Progress at the INPI

Under appeal
  1. Filing05/17/82
  2. Publication12/20/83
  3. Examination02/26/85
  4. Refused12/16/86
  5. Grant
  6. In force

The application was refused by the INPI on 12/16/1986. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 12/16/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

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Inventors

L. B. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

12/16/1986

RPI 843

Conhecimento de parecer técnico

#7.1

09/10/1985

RPI 777

Solicitação de exame técnico

#4.1

02/26/1985

RPI 749

Publicação do pedido de patente

#3.1

12/20/1983

RPI 687

Pedido de patente depositado

#2.1

06/29/1982

RPI 610

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