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Official data from INPI

CONTROLADOR DE VAZÃO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9002755

Type

Invention Patent

Filing

06/07/1990

Publication

01/22/1991

Progress at the INPI

  1. Filing06/07/90
  2. Publication01/22/91
  3. Examination06/30/92
  4. Allowance08/02/94
  5. Grant03/01/95
  6. Expired05/25/10

The letters patent expired on 05/25/2010: 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: 05/25/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

No applicants.

Inventors

A. B. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 07/06/2005

05/25/2010

RPI 2055

Concessão da patente

#16.1

03/01/1995

RPI 1265

Deferimento

#9.1

08/02/1994

RPI 1235

Solicitação de exame técnico

#4.1

06/30/1992

RPI 1126

Publicação antecipada

#3.2

01/22/1991

RPI 1051

Pedido de patente depositado

#2.1

10/16/1990

RPI 1037

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