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Official data from INPI

DISPOSITIVO REGULADOR DE VAZÃO

Prazo de SigiloInvention Patent

Application data

Number

PI8804913

Type

Invention Patent

Filing

09/15/1988

Publication

05/15/1990

Progress at the INPI

  1. Filing09/15/88
  2. Publication05/15/90
  3. Examination08/28/90
  4. Allowance10/13/92
  5. Grant06/29/93
  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.

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Latest action published by the INPI: 02/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Tubos e Conexões Tigre Ltda

SC, BR

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Inventors

D. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

02/08/1989

RPI 955

Carta-patente expirada

#21.1

Patente extinta em 15/09/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

03/16/1993

RPI 1163

Deferimento

#9.1

10/13/1992

RPI 1141

Exigência - art. 36 da LPI

#6.1

12/03/1991

RPI 1096

Solicitação de exame técnico

#4.1

08/28/1990

RPI 1030

Publicação do pedido de patente

#3.1

05/15/1990

RPI 1018

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