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Official data from INPI

CONVERSOR DIGITAL-ANALÓGICO, MODULADOR E DEMODULADOR

Em ExigênciaInvention Patent
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Application data

Number

PI8505564

Type

Invention Patent

Filing

11/06/1985

Publication

08/12/1986
View on INPI

Progress at the INPI

  1. Filing11/06/85
  2. Publication08/12/86
  3. Examination06/09/87
  4. Allowance04/16/91
  5. Grant11/26/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. C. (pessoa física)

JP

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Inventors

Y. Y. (pessoa física)

JP

Technical data

IPC Classification

H03M 1/66

Priority claims

JP

233825/1984 · 11/06/1984

JP

233827/1984 · 11/06/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

06/09/1987

RPI 868

Publicação do pedido de patente

#3.1

08/12/1986

RPI 825

Pedido de patente depositado

#2.1

01/14/1986

RPI 795

Carta-patente expirada

#21.1

Patente extinta em 06/11/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

11/26/1991

RPI 1095

Notificação para pagamento de retribuição

#13.1

07/30/1991

RPI 1078

Deferimento

#9.1

04/16/1991

RPI 1063

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