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Official data from INPI

REVESTIMENTO REFRATÁRIO DE TAMPA PARA TRATAMENTO DE REFINO EM PANELA DE AÇO.

Em AnáliseInvention Patent

Application data

Number

PI8200199

Type

Invention Patent

Filing

01/15/1982

Publication

09/20/1983

Progress at the INPI

  1. Filing01/15/82
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. In force

The application was filed at the INPI on 01/15/1982. It awaits formal examination and publication in the RPI gazette.

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Latest action published by the INPI: 09/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

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Inventors

C. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

09/08/1987

RPI 881

Pedido de certificado de adição de invenção

#5.1

08/13/1985

RPI 773

Solicitação de exame técnico

#4.1

03/12/1985

RPI 751

Publicação do pedido de patente

#3.1

09/20/1983

RPI 674

Pedido de patente depositado

#2.1

03/01/1983

RPI 645

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