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Official data from INPI

APLICAÇÃO DE BLOCOS REFRATÁRIOS PRÉ-MOLDADOS EM FORNO POÇO

PublicadaInvention Patent

Application data

Number

PI8706598

Type

Invention Patent

Filing

12/08/1987

Publication

07/04/1989

Progress at the INPI

  1. Filing12/08/87
  2. Publication07/04/89
  3. Abandoned05/22/90
  4. Allowance
  5. Grant
  6. In force

The applicant withdrew the application. The case ended without a patent.

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Latest action published by the INPI: 07/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

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Inventors

A. S. (pessoa física)

BR

D. F. (pessoa física)

O. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/04/1989

RPI 976

Pedido de patente depositado

#2.1

01/31/1989

RPI 954

10.1

04/09/1991

RPI 1062

15.5

01/15/1991

RPI 1050

Solicitação de exame técnico

#4.1

05/22/1990

RPI 1019

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