(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

ESTAGIO DE SELECAO DO SINAL ALTERNADO DE MAIOR AMPLITUDE ENTRE DOIS SINAIS DE FREQUENCIA DIFERENTES

ConcedidaInvention Patent

Application data

Number

PI8107468

Type

Invention Patent

Filing

03/18/1980

Publication

02/09/1982

Progress at the INPI

  1. Filing03/18/80
  2. Publication02/09/82
  3. Examination09/13/83
  4. Allowance05/14/85
  5. Grant11/26/85
  6. Terminated08/07/90

The patent was granted on 11/26/1985 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

J. S. (pessoa física)

See this company's full portfolio

Inventors

L. D. (pessoa física)

S. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

09/03/1985

RPI 776

Deferimento

#9.1

05/14/1985

RPI 760

Exigência - art. 36 da LPI

#6.1

09/18/1984

RPI 726

Solicitação de exame técnico

#4.1

09/13/1983

RPI 673

Notificação de entrada na fase nacional - PCT

#1.3

02/09/1982

RPI 590

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.