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Official data from INPI

CIRCUITO DE PROCESSAMENTO DE SINAL ANÁLOGO.

Em AnáliseInvention Patent

Application data

Number

PI8601996

Type

Invention Patent

Filing

04/18/1986

Publication

01/06/1987

Progress at the INPI

  1. Filing04/18/86
  2. Publication01/06/87
  3. Examination03/21/89
  4. Allowance10/27/92
  5. Grant06/29/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 03/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

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Inventors

J. E. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

725.179 · 04/19/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/21/1989

RPI 961

Publicação do pedido de patente

#3.1

01/06/1987

RPI 846

Pedido de patente depositado

#2.1

11/04/1986

RPI 837

Carta-patente expirada

#21.1

Patente extinta em 18/04/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

03/09/1993

RPI 1162

Deferimento

#9.1

10/27/1992

RPI 1143

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