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Official data from INPI

DETECTOR E INDICADOR DIFERENCIAL DE NÍVEIS ANALÓGICOS

Em AnáliseInvention Patent

Application data

Number

PI8601552

Type

Invention Patent

Filing

03/14/1986

Publication

02/17/1987

Progress at the INPI

  1. Filing03/14/86
  2. Publication02/17/87
  3. Abandoned04/28/87
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 04/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica de Tubarão - Grupo Siderbrás

ES, BR

See this company's full portfolio

Inventors

J. A. (pessoa física)

BR

M. M. (pessoa física)

BR

M. O. (pessoa física)

BR

R. B. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/28/1987

RPI 862

Publicação antecipada

#3.2

02/17/1987

RPI 852

Pedido de patente depositado

#2.1

11/04/1986

RPI 837

Arquivamento - Art. 36 §1° da LPI

#11.2

06/30/1992

RPI 1126

Exigência - art. 36 da LPI

#6.1

09/24/1991

RPI 1086

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