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Official data from INPI

PROCESSO PARA EQUALIZAR VARIAÇÕES NA DENSIDADE DE UM FLUXO DE FLUIDO EM UM SISTEMA DE DUTOS E APARELHOS CAPTOR DE "ESLUGUES"

Arquivada/ExtintaInvention PatentPCT · NO1988000093

Application data

Number

PI8807858

Type

Invention Patent

Filing

12/15/1988

Publication

11/13/1990

PCT

NO1988000093

Progress at the INPI

  1. Filing12/15/88
  2. Publication11/13/90
  3. Examination07/16/91
  4. Allowance11/17/92
  5. Grant05/25/93
  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: 09/02/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. A. (pessoa física)

NO

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Inventors

C. C. (pessoa física)

Technical data

IPC Classification

Priority claims

NO

875340 · 12/21/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 15/12/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

05/25/1993

RPI 1173

Notificação para pagamento de retribuição

#13.1

04/06/1993

RPI 1166

Deferimento

#9.1

11/17/1992

RPI 1146

Solicitação de exame técnico

#4.1

07/16/1991

RPI 1076

Notificação de entrada na fase nacional - PCT

#1.3

11/13/1990

RPI 1041

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