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Official data from INPI

SISTEMA DE COMUTAÇÃO TELEFÔNICA MULTIPLEX DE DIVISÃO DE TEMPO E PROCESSO DE COMUTAÇÃO PARA O MESMO

Em AnáliseInvention Patent

Application data

Number

PI8802114

Type

Invention Patent

Filing

05/02/1988

Publication

12/06/1988

Progress at the INPI

  1. Filing05/02/88
  2. Publication12/06/88
  3. Examination11/07/89
  4. Allowance01/31/95
  5. Grant07/25/95
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Redcom Laboratories, Inc.

US

Inventors

B. L. (pessoa física)

US

C. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

036.934 · 04/10/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/07/1989

RPI 994

Publicação do pedido de patente

#3.1

12/06/1988

RPI 946

Pedido de patente depositado

#2.1

09/13/1988

RPI 934

Carta-patente expirada

#21.1

Patente extinta em 02/05/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

07/25/1995

RPI 1286

Deferimento

#9.1

01/31/1995

RPI 1261

Exigência - art. 36 da LPI

#6.1

08/30/1994

RPI 1239

Exigência - art. 36 da LPI

#6.1

08/24/1993

RPI 1186

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