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Official data from INPI

UNIDADE DE PROTEÇÃO DE SUBTENSÃO EM CC

Prazo de SigiloInvention Patent

Application data

Number

PI8805277

Type

Invention Patent

Filing

10/13/1988

Publication

05/29/1990

Progress at the INPI

  1. Filing10/13/88
  2. Publication05/29/90
  3. Examination08/03/93
  4. Allowance11/14/95
  5. Grant10/29/96
  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: 02/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Furnas - Centrais Elétricas S A

RJ, BR

See this company's full portfolio

Inventors

V. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

02/08/1989

RPI 955

Carta-patente expirada

#21.1

Patente extinta em 13/10/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/29/1996

RPI 1352

Notificação para pagamento de retribuição

#13.1

03/19/1996

RPI 1320

Deferimento

#9.1

11/14/1995

RPI 1302

11.8

08/03/1993

RPI 1183

Solicitação de exame técnico

#4.1

08/03/1993

RPI 1183

Arquivamento - Art. 36 §1° da LPI

#11.2

05/25/1993

RPI 1173

Solicitação de exame não realizada

#4.2

09/01/1992

RPI 1135

Publicação do pedido de patente

#3.1

05/29/1990

RPI 1020

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