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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8404968

Type

Invention Patent

Filing

10/02/1984

Publication

02/26/1985

Progress at the INPI

  1. Filing10/02/84
  2. Publication02/26/85
  3. Examination07/09/85
  4. Allowance09/08/87
  5. Grant06/28/88
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Telecomunicações Do Rio De Janeiro S/A - Telerj

RJ, BR

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Inventors

A. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Deferimento

#9.1

09/08/1987

RPI 881

Solicitação de exame técnico

#4.1

07/09/1985

RPI 768

Publicação antecipada

#3.2

02/26/1985

RPI 749

Pedido de patente depositado

#2.1

12/11/1984

RPI 738

Carta-patente expirada

#21.1

Patente extinta em 02/10/99

07/08/2008

RPI 1957

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