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Official data from INPI

VÁLVULA AUTOMÁTICA

Prazo de SigiloInvention Patent

Application data

Number

PI8806113

Type

Invention Patent

Filing

11/22/1988

Publication

06/26/1990

Progress at the INPI

  1. Filing11/22/88
  2. Publication06/26/90
  3. Examination11/17/92
  4. Allowance11/03/93
  5. Grant05/31/94
  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: 04/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. M. (pessoa física)

IT

Inventors

M. M. (pessoa física)

IT

Technical data

IPC Classification

Priority claims

IT

2912A/88 · 02/26/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

04/04/1989

RPI 963

Carta-patente expirada

#21.1

Patente extinta em 22/11/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

11/03/1993

RPI 1196

Solicitação de exame técnico

#4.1

11/17/1992

RPI 1146

Publicação do pedido de patente

#3.1

06/26/1990

RPI 1024

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