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

APARELHO PARA COMANDAR DIFERENÇAS ENTRE NÍVEIS DE CORRENTE EM ZONAS ADJACENTES DE UMA LINHA DE TRANSMISSÃO DE CORRENTE ALTERNADA.

ConcedidaInvention Patent

Application data

Number

PI8301903

Type

Invention Patent

Filing

04/14/1983

Publication

12/20/1983

Progress at the INPI

  1. Filing04/14/83
  2. Publication12/20/83
  3. Examination04/29/86
  4. Allowance09/01/87
  5. Grant05/31/88
  6. Terminated08/29/95

The patent was granted on 05/31/1988 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Lucas Industries Public Limited Companuy

GB

Inventors

O. T. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8211160 · 04/16/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

12/29/1987

RPI 897

Deferimento

#9.1

09/01/1987

RPI 880

Solicitação de exame técnico

#4.1

04/29/1986

RPI 810

Publicação do pedido de patente

#3.1

12/20/1983

RPI 687

Pedido de patente depositado

#2.1

05/31/1983

RPI 658

Anuidade - prazo legal encerrado

#18.2

08/29/1995

RPI 1291

Patent monitoring

Track this patent in real time.

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