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Official data from INPI

Sistema de telecomunicação digital com pelo menos um setor de linha de quatro fios.

Em AnáliseInvention Patent

Application data

Number

PI8003158

Type

Invention Patent

Filing

05/20/1980

Publication

-

Progress at the INPI

  1. Filing05/20/80
  2. Publication
  3. Examination03/29/83
  4. Allowance01/03/84
  5. Grant06/26/84
  6. Terminated05/17/88

The patent was granted on 06/26/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. A. (pessoa física)

DE

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Inventors

S. H. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 29 20 575.2 · 05/21/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

Concessão da patente

#16.1

06/26/1984

RPI 714

Notificação para pagamento de retribuição

#13.1

04/24/1984

RPI 705

Deferimento

#9.1

01/03/1984

RPI 689

Exigência - art. 36 da LPI

#6.1

08/30/1983

RPI 671

Solicitação de exame técnico

#4.1

03/29/1983

RPI 649

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