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Official data from INPI

INTERCALADOR DE VOZ E DADOS COM COMUTAÇÃO ELETRÔNICA

PublicadaInvention Patent
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Application data

Number

PI8500837

Type

Invention Patent

Filing

02/26/1985

Publication

09/30/1986
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Progress at the INPI

  1. Filing02/26/85
  2. Publication09/30/86
  3. Abandoned04/09/91
  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.

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Latest action published by the INPI: 10/11/1988. 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

E. A. (pessoa física)

BR

Technical data

IPC Classification

H04M 11/06

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.6

10/11/1988

RPI 938

Retificação

#15.3

05/31/1988

RPI 919

Publicação do pedido de patente

#3.1

09/30/1986

RPI 832

Pedido de patente depositado

#2.1

05/14/1985

RPI 760

11.3

01/19/1993

RPI 1155

Exigência - art. 36 da LPI

#6.1

04/21/1992

RPI 1116

Solicitação de exame técnico

#4.1

04/09/1991

RPI 1062

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