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Official data from INPI

CONCENTRADOR TELEFÔNICO CPA PARA TELEFONE PUBLICO

Em AnáliseInvention Patent

Application data

Number

PI8703635

Type

Invention Patent

Filing

06/29/1987

Publication

12/08/1987

Progress at the INPI

  1. Filing06/29/87
  2. Publication12/08/87
  3. Examination02/17/88
  4. Allowance10/26/93
  5. Grant08/30/94
  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: 02/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Zetax Tecnologia Engenharia Indústria e Comércio Ltda

SP, BR

Inventors

P. J. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

02/17/1988

RPI 904

Publicação antecipada

#3.2

12/08/1987

RPI 894

Pedido de patente depositado

#2.1

10/06/1987

RPI 885

Carta-patente expirada

#21.1

Patente extinta em 29/06/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

08/30/1994

RPI 1239

Notificação para pagamento de retribuição

#13.1

03/15/1994

RPI 1215

Deferimento

#9.1

10/26/1993

RPI 1195

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