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Official data from INPI

VÁLVULA DE ALIVIO E DESCARGA RÁPIDA

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005578

Type

Invention Patent

Filing

11/01/1990

Publication

08/06/1991

Progress at the INPI

  1. Filing11/01/90
  2. Publication08/06/91
  3. Examination06/15/93
  4. Allowance05/31/94
  5. Grant03/28/95
  6. Expired06/08/10

The letters patent expired on 06/08/2010: 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: 06/08/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Etera S/A Industrial e Comercial

SP, BR

Inventors

M. N. (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 01/11/2005

06/08/2010

RPI 2057

Concessão da patente

#16.1

03/28/1995

RPI 1269

Notificação para pagamento de retribuição

#13.1

10/04/1994

RPI 1244

Deferimento

#9.1

05/31/1994

RPI 1226

Solicitação de exame técnico

#4.1

06/15/1993

RPI 1176

Publicação antecipada

#3.2

08/06/1991

RPI 1079

Pedido de patente depositado

#2.1

04/23/1991

RPI 1064

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