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Official data from INPI

SISTEMA DE CIRCUITO PARA AMPLIFICAÇÃO LINEAR E DESMODULAÇÃO DE UM SINAL MODULADO EM AM, E ELEMENTO SEMICONDUTOR INTEGRADO PARA USO NO DITO SISTEMA DE CIRCUITO

PublicadaInvention Patent
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Application data

Number

PI8900893

Type

Invention Patent

Filing

02/27/1989

Publication

10/24/1989
View on INPI

Progress at the INPI

  1. Filing02/27/89
  2. Publication10/24/89
  3. Examination07/30/91
  4. Allowance06/23/98
  5. Grant12/29/98
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Koninklijke Philips Electronics N.V.

NL

N.V. Philips'Gloeilampenfabrieken

NL

Philips Electronics N.V

NL

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Inventors

A. G. (pessoa física)

NL

Technical data

IPC Classification

H03F 3/387H04B 1/16

Priority claims

NL

8800510 · 02/29/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/24/1989

RPI 992

Pedido de patente depositado

#2.1

04/11/1989

RPI 964

Carta-patente expirada

#21.1

Patente extinta em 27/02/2009

12/18/2012

RPI 2189

Alteração de nome deferida

#25.4

Alterado de: Philips Electronics N.V.

08/17/1999

RPI 1493

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

06/23/1998

RPI 1435

Exigência - art. 36 da LPI

#6.1

11/18/1997

RPI 1407

Alteração de nome deferida

#25.4

09/16/1997

RPI 1398

Solicitação de exame técnico

#4.1

07/30/1991

RPI 1078

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