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Official data from INPI

SISTEMA INIBIDOR DE FUMAÇA

Em AnáliseInvention Patent

Application data

Number

PI9000047

Type

Invention Patent

Filing

01/08/1990

Publication

10/08/1991

Progress at the INPI

  1. Filing01/08/90
  2. Publication10/08/91
  3. Abandoned04/27/93
  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: 09/12/1995. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

Instituto de Pesquisas Tecnológicas de São Paulo S/A - IPT

SP, BR

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Inventors

E. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

10.1

09/12/1995

RPI 1293

Retificação de parecer técnico

#7.3

05/30/1995

RPI 1278

Conhecimento de parecer técnico

#7.1

04/04/1995

RPI 1270

Solicitação de exame técnico

#4.1

04/27/1993

RPI 1169

Publicação do pedido de patente

#3.1

10/08/1991

RPI 1088

Pedido de patente depositado

#2.1

05/22/1990

RPI 1019

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