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Official data from INPI

DISJUNTOR DE ALTA OU MÉDIA TENSÃO A GÁS SOB PRESSÃO COM ENERGIA DE CORTE EXTRAÍDA DAQUELA DO ARCO

PublicadaInvention Patent

Application data

Number

PI8803823

Type

Invention Patent

Filing

08/02/1988

Publication

02/21/1989

Progress at the INPI

  1. Filing08/02/88
  2. Publication02/21/89
  3. Examination04/16/91
  4. Allowance04/05/94
  5. Grant10/25/94
  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: 02/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alsthom

FR

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Inventors

D. D. (pessoa física)

FR

E. T. (pessoa física)

FR

M. P. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

87 10 988 · 08/03/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/21/1989

RPI 957

Pedido de patente depositado

#2.1

01/03/1989

RPI 950

Carta-patente expirada

#21.1

Patente extinta em 02/08/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

08/02/1994

RPI 1235

Deferimento

#9.1

04/05/1994

RPI 1218

Solicitação de exame técnico

#4.1

04/16/1991

RPI 1063

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