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Official data from INPI

CÉLULA TRIFÁSICA PARA ESTAÇÃO BLINDADA DE MÉDIA OU ALTA TENSÃO E ESTAÇÃO CONSTITUÍDA DESSAS CÉLULAS

PublicadaInvention Patent

Application data

Number

PI8901826

Type

Invention Patent

Filing

04/18/1989

Publication

11/28/1989

Progress at the INPI

  1. Filing04/18/89
  2. Publication11/28/89
  3. Examination09/10/91
  4. Allowance05/10/94
  5. Grant12/27/94
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alsthom

FR

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Inventors

E. T. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

88 05 077 · 04/18/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/28/1989

RPI 997

Pedido de patente depositado

#2.1

05/30/1989

RPI 971

Carta-patente expirada

#21.1

Patente extinta em 18/04/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

12/27/1994

RPI 1256

Notificação para pagamento de retribuição

#13.1

09/27/1994

RPI 1243

Deferimento

#9.1

05/10/1994

RPI 1223

Solicitação de exame técnico

#4.1

09/10/1991

RPI 1084

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