Official data from INPI

CENTRAL TELEFÔNICA COMUTADA

Arquivada/ExtintaInvention PatentPCT · EP1987000602

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Application data

Number

PI8707846

Type

Invention Patent

Filing

10/12/1987

Publication

10/03/1989

PCT

EP1987000602

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Progress at the INPI

Filing10/12/87
Publication10/03/89
Examination06/19/90
Allowance02/04/92
Grant11/24/92
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.

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Latest action published by the INPI: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Italtel

Inventors

A. B. (pessoa física)

L. C. (pessoa física)

Technical data

IPC Classification

H04Q 11/04 H04Q 3/545

Priority claims

22211 A/86 · 11/03/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

10/03/1989

RPI 989

Carta-patente expirada

#21.1

Patente extinta em 12/10/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/24/1992

RPI 1147

Notificação para pagamento de retribuição

#13.1

09/08/1992

RPI 1136

Deferimento

#9.1

02/04/1992

RPI 1105

Solicitação de exame técnico

#4.1

06/19/1990

RPI 1023

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