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Official data from INPI

DISPOSITIVO DE CIRCUITO PARA A PROTEÇÃO DO CIRCUITO ELETRÔNICO DE INTERFACE DE CIRCUITOS DE CONEXÃO DE ASSINANTES

PublicadaInvention Patent

Application data

Number

PI8702873

Type

Invention Patent

Filing

06/05/1987

Publication

03/01/1988

Progress at the INPI

  1. Filing06/05/87
  2. Publication03/01/88
  3. Examination10/30/90
  4. Allowance11/26/91
  5. Grant09/29/92
  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: 03/01/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. A. (pessoa física)

DE

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Inventors

W. N. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 36 19 037.3 · 06/06/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

03/01/1988

RPI 906

Pedido de patente depositado

#2.1

08/11/1987

RPI 877

Carta-patente expirada

#21.1

Patente extinta em 05/06/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

09/29/1992

RPI 1139

Notificação para pagamento de retribuição

#13.1

04/14/1992

RPI 1115

Deferimento

#9.1

11/26/1991

RPI 1095

Solicitação de exame técnico

#4.1

10/30/1990

RPI 1039

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