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Official data from INPI

APERFEIÇOAMENTO EM CANAIS DE MICRO-ONDAS INTERLIGADOS A LINHAS TELEFÔNICAS DE ALTAS PERDAS

ArquivadaInvention Patent

Application data

Number

PI8101120

Type

Invention Patent

Filing

05/24/1981

Publication

11/03/1981

Progress at the INPI

  1. Filing05/24/81
  2. Publication11/03/81
  3. Abandoned09/27/83
  4. Allowance
  5. Grant
  6. In force

The application was abandoned at the INPI. The case ended without a patent and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 01/13/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A - USIMINAS

MG, BR

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Inventors

A. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

11.3

01/13/1987

RPI 847

Exigência - art. 36 da LPI

#6.1

06/17/1986

RPI 817

Republicação - classificação IPC

#15.11

09/03/1985

RPI 776

Exigência - art. 36 da LPI

#6.1

08/13/1985

RPI 773

Exigência - art. 36 da LPI

#6.1

08/07/1984

RPI 720

Solicitação de exame técnico

#4.1

09/27/1983

RPI 675

Publicação antecipada

#3.2

11/03/1981

RPI 576

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