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Official data from INPI

CIRCUITO DE VERIFICAÇÃO DE SEGURANÇA À PROVA DE FALHAS E CIRCUITO VITAL PARA VERIFICAÇÃO DA RECEPÇÃO DE UM ÚNICO SINAL

Em AnáliseInvention Patent

Application data

Number

PI8505524

Type

Invention Patent

Filing

11/05/1985

Publication

08/12/1986

Progress at the INPI

  1. Filing11/05/85
  2. Publication08/12/86
  3. Examination06/14/88
  4. Allowance11/19/91
  5. Grant10/27/92
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Union Switch & Signal, Inc.

US

See this company's full portfolio

Inventors

J. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

670.243 · 11/13/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/14/1988

RPI 921

Publicação do pedido de patente

#3.1

08/12/1986

RPI 825

Pedido de patente depositado

#2.1

01/14/1986

RPI 795

Carta-patente expirada

#21.1

Patente extinta em 05/11/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

10/27/1992

RPI 1143

Notificação para pagamento de retribuição

#13.1

04/07/1992

RPI 1114

Deferimento

#9.1

11/19/1991

RPI 1094

Exigência - art. 36 da LPI

#6.1

05/28/1991

RPI 1069

14.1

06/05/1990

RPI 1021

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