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Official data from INPI

SISTEMA PARA AJUSTAR UM FILTRO DE EQUILIBRIO DIGITAL AUTO-ADAPTAVEL INCLUINDO EM UMA UNIDADE DE ASSINANTE

ConcedidaInvention Patent

Application data

Number

PI8108897

Type

Invention Patent

Filing

07/01/1980

Publication

10/26/1982

Progress at the INPI

  1. Filing07/01/80
  2. Publication10/26/82
  3. Examination02/07/84
  4. Allowance07/09/85
  5. Grant12/31/85
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ERICSSON TELEFON AB L M [SE]

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Inventors

S. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

08/14/1984

RPI 721

Solicitação de exame técnico

#4.1

02/07/1984

RPI 694

Notificação de entrada na fase nacional - PCT

#1.3

10/26/1982

RPI 627

Carta-patente expirada

#21.1

Patente extinta em 29/06/96

08/19/2008

RPI 1963

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