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Official data from INPI

DISJUNTOR A GÁS DIELÉTRICO SOB PRESSÃO.

Em AnáliseInvention Patent

Application data

Number

PI8701375

Type

Invention Patent

Filing

03/26/1987

Publication

12/22/1987

Progress at the INPI

  1. Filing03/26/87
  2. Publication12/22/87
  3. Examination08/23/88
  4. Allowance10/27/92
  5. Grant05/25/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 08/23/1988. 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

S. Y. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

FR

86 04 393 · 03/26/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/23/1988

RPI 931

Publicação do pedido de patente

#3.1

12/22/1987

RPI 896

Pedido de patente depositado

#2.1

07/07/1987

RPI 872

Carta-patente expirada

#21.1

Patente extinta em 26/03/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

05/25/1993

RPI 1173

Notificação para pagamento de retribuição

#13.1

03/09/1993

RPI 1162

Deferimento

#9.1

10/27/1992

RPI 1143

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