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Official data from INPI

SISTEMA E PROCESSO PARA IDENTIFICAÇÃO DA FASE DE CONDUTORES EM UM CIRCUITO ELÉTRICO.

Em AnáliseInvention Patent

Application data

Number

PI8801393

Type

Invention Patent

Filing

03/25/1988

Publication

11/01/1988

Progress at the INPI

  1. Filing03/25/88
  2. Publication11/01/88
  3. Examination05/09/89
  4. Allowance09/21/93
  5. Grant04/26/94
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 05/09/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hydro-Quebec

CA

See this company's full portfolio

Inventors

B. B. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

CA

533.170 · 03/27/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/09/1989

RPI 968

Publicação do pedido de patente

#3.1

11/01/1988

RPI 941

Pedido de patente depositado

#2.1

07/12/1988

RPI 925

Carta-patente expirada

#21.1

Patente extinta em 25/03/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/26/1994

RPI 1221

Deferimento

#9.1

09/21/1993

RPI 1190

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