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Official data from INPI

CENTRAL PRIVADA DE COMUTAÇÃO TELEFÔNICA.

Prazo de SigiloInvention Patent

Application data

Number

PI8902744

Type

Invention Patent

Filing

06/09/1989

Publication

05/29/1990

Progress at the INPI

Under appeal
  1. Filing06/09/89
  2. Publication05/29/90
  3. Examination10/30/90
  4. Refused04/05/94
  5. Grant
  6. In force

The application was refused by the INPI on 04/05/1994. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 07/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Zetax Tecnologia Engenharia Indústria e Comércio Ltda

SP, BR

Inventors

M. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/18/1989

RPI 978

Indeferimento

#9.2

04/05/1994

RPI 1218

Solicitação de exame técnico

#4.1

10/30/1990

RPI 1039

Publicação antecipada

#3.2

05/29/1990

RPI 1020

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