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Official data from INPI

PROCESSO DE BOMBEAMENTO DE MISTURA DIFÁSICA LÍQUIDO-GÁS NUM POÇO DE EXTRAÇÃO E DISPOSITIVO DE APLICAÇÃO DO PROCESSO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004880

Type

Invention Patent

Filing

09/28/1990

Publication

09/10/1991

Progress at the INPI

  1. Filing09/28/90
  2. Publication09/10/91
  3. Examination09/14/93
  4. Allowance07/19/94
  5. Grant03/28/95
  6. Expired06/01/10

The letters patent expired on 06/01/2010: 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: 06/01/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Societe Nationale Elf Aquitaine (Production)

FR

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Inventors

D. S. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

89 12759 · 09/29/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 28/09/2005

06/01/2010

RPI 2056

Concessão da patente

#16.1

03/28/1995

RPI 1269

Notificação para pagamento de retribuição

#13.1

11/15/1994

RPI 1250

Deferimento

#9.1

07/19/1994

RPI 1233

Solicitação de exame técnico

#4.1

09/14/1993

RPI 1189

Publicação do pedido de patente

#3.1

09/10/1991

RPI 1084

Pedido de patente depositado

#2.1

04/02/1991

RPI 1061

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