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Official data from INPI

REVESTIMENTO REFRATÁRIO DE FORNO PILOTO PARA ESTUDOS DE COMBUSTÃO

Prazo de SigiloInvention Patent

Application data

Number

PI8806433

Type

Invention Patent

Filing

12/07/1988

Publication

07/24/1990

Progress at the INPI

  1. Filing12/07/88
  2. Publication07/24/90
  3. Abandoned12/04/90
  4. Allowance
  5. Grant
  6. In force

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

Talk to a specialist

Latest action published by the INPI: 04/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

See this company's full portfolio

Inventors

P. D. (pessoa física)

BR

Technical data

IPC Classification

Priority claims

US

142,601 · 01/11/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

04/11/1989

RPI 964

10.1

10/22/1996

RPI 1351

Deferimento

#9.1

03/19/1996

RPI 1320

Exigência - art. 36 da LPI

#6.1

06/06/1995

RPI 1279

Solicitação de exame técnico

#4.1

12/04/1990

RPI 1044

Publicação do pedido de patente

#3.1

07/24/1990

RPI 1025

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