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Official data from INPI

APERFEIÇOAMENTO EM TELEFONE DE MAGNETO OU DE CHAMADA ELETRÔNICA

ConcedidaInvention Patent

Application data

Number

PI8103336

Type

Invention Patent

Filing

05/28/1981

Publication

11/03/1981

Progress at the INPI

  1. Filing05/28/81
  2. Publication11/03/81
  3. Examination11/16/83
  4. Allowance04/08/86
  5. Grant11/25/86
  6. Terminated06/20/95

The patent was granted on 11/25/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 11/25/1986. 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).

Concessão da patente

#16.1

11/25/1986

RPI 840

Notificação para pagamento de retribuição

#13.1

08/12/1986

RPI 825

Deferimento

#9.1

04/08/1986

RPI 807

Exigência - art. 36 da LPI

#6.1

01/15/1985

RPI 743

Solicitação de exame técnico

#4.1

11/16/1983

RPI 682

Publicação antecipada

#3.2

11/03/1981

RPI 576

Anuidade - prazo legal encerrado

#18.2

06/20/1995

RPI 1281

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