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Official data from INPI

DISPOSITIVOS DE COMUTAÇÃO PARA USO EM SISTEMAS DIGITAIS DE CENTRAIS DE TELECOMUNICAÇÕES

Em AnáliseInvention Patent

Application data

Number

PI8601497

Type

Invention Patent

Filing

04/02/1986

Publication

12/09/1986

Progress at the INPI

  1. Filing04/02/86
  2. Publication12/09/86
  3. Examination12/06/88
  4. Allowance06/11/91
  5. Grant04/28/92
  6. Terminated09/26/95

The patent was granted on 04/28/1992 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: 12/06/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Siemens Plessey Electronic Systemms Limited

GB

Inventors

K. G. (pessoa física)

GB

M. L. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8508740 · 04/03/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/06/1988

RPI 946

Publicação do pedido de patente

#3.1

12/09/1986

RPI 842

Pedido de patente depositado

#2.1

10/21/1986

RPI 835

Anuidade - prazo legal encerrado

#18.2

09/26/1995

RPI 1295

Pedido de licença compulsória

#20.1

04/06/1993

RPI 1166

Concessão da patente

#16.1

04/28/1992

RPI 1117

Notificação para pagamento de retribuição

#13.1

10/08/1991

RPI 1088

Deferimento

#9.1

06/11/1991

RPI 1071

Exigência - art. 36 da LPI

#6.1

12/26/1990

RPI 1047

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