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Official data from INPI

CONVERSOR DE SINALIZAÇÃO BIDIRECIONAL

Em AnáliseInvention Patent
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Application data

Number

PI8602791

Type

Invention Patent

Filing

06/16/1986

Publication

02/02/1988
View on INPI

Progress at the INPI

  1. Filing06/16/86
  2. Publication02/02/88
  3. Examination05/03/88
  4. Allowance04/16/91
  5. Grant11/26/91
  6. Expired07/22/08

The letters patent expired on 07/22/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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

Applicants and inventors

Applicants

Splice do Brasil Telecomunicações e Eletrônica Ltda

SP, BR

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Inventors

A. B. (pessoa física)

BR

Technical data

IPC Classification

H04Q 1/30

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/03/1988

RPI 915

Publicação do pedido de patente

#3.1

02/02/1988

RPI 902

14.4

03/04/1987

RPI 854

Pedido de patente depositado

#2.1

12/23/1986

RPI 844

Carta-patente expirada

#21.1

Patente extinta em 16/06/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

11/26/1991

RPI 1095

Notificação para pagamento de retribuição

#13.1

07/30/1991

RPI 1078

Deferimento

#9.1

04/16/1991

RPI 1063

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