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

DISPOSIÇÃO DE CIRCUITO PARA O SUPRIMENTO DE IMPULSOS TARIFÁRIOS PARA A BILHETAGEM TARIFÁRIA NO ASSINANTE

PublicadaInvention Patent

Application data

Number

PI8704728

Type

Invention Patent

Filing

09/11/1987

Publication

05/03/1988

Progress at the INPI

  1. Filing09/11/87
  2. Publication05/03/88
  3. Examination11/13/90
  4. Allowance03/17/92
  5. Grant11/24/92
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/03/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SIEMENS AG [DE]

See this company's full portfolio

Inventors

M. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

O3631175.8 · 09/12/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/03/1988

RPI 915

Pedido de patente depositado

#2.1

11/24/1987

RPI 892

Carta-patente expirada

#21.1

Patente extinta em 11/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/24/1992

RPI 1147

Notificação para pagamento de retribuição

#13.1

08/11/1992

RPI 1132

Deferimento

#9.1

03/17/1992

RPI 1111

Solicitação de exame técnico

#4.1

11/13/1990

RPI 1041

Patent monitoring

Track this patent in real time.

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