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Official data from INPI

PROCESSO E APARELHO PARA REDUZIR TEOR DE ENERGIA EM SINAIS DE COMUNICAÇÃO, PROCESSO PARA REDUZIR TEOR DE ENERGIA DE SINAIS REMOTOS-ENTRANTES, PROCESSO E APARELHO PARA REDUZIR TEOR DE ENERGIA EM SINAIS, SISTEMA DE COMUNICAÇÃO, PROCESSO PARA DETECTAR ECOS EM SINAL, E APARELHO PARA DETECTAR ECOS EM SISTEMA DE COMUNICAÇÃO

ArquivadaInvention PatentPCT · US1996000391

Application data

Number

PI9605921

Type

Invention Patent

Filing

01/11/1996

Publication

11/18/1997

PCT

US1996000391

Progress at the INPI

  1. Filing01/11/96
  2. Publication11/18/97
  3. Examination
  4. Allowance05/28/02
  5. Abandoned
  6. In force

The application was allowed on 05/28/2002 but abandoned for failure to pay the grant fee (art. 38 of the Brazilian IP Act). The letters patent were never issued.

Talk to a specialist

Latest action published by the INPI: 01/21/2003. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

At&t IPM Corp

US

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Inventors

P. J. (pessoa física)

US

W. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

08/398.272 · 03/03/1995

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

01/21/2003

RPI 1672

Deferimento

#9.1

05/28/2002

RPI 1638

Notificação de entrada na fase nacional - PCT

#1.3

11/18/1997

RPI 1407

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