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Official data from INPI

DISPOSIÇÃO CONTRUTIVA EM VÁLVULA REGULADORA DE PRESSÃO PARA PANELAS DE PRESSÀO

Em AnáliseUtility Model

Application data

Number

MU6400258

Type

Utility Model

Filing

02/21/1984

Publication

10/01/1985

Progress at the INPI

  1. Filing02/21/84
  2. Publication10/01/85
  3. Examination08/05/86
  4. Allowance02/09/88
  5. Grant08/30/88
  6. Expired10/04/94

The letters patent expired on 10/04/1994: 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: 06/06/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ALCAN BRASIL [BR]

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Inventors

C. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

06/06/1989

RPI 972

Concessão da patente

#16.1

08/30/1988

RPI 932

Notificação para pagamento de retribuição

#13.1

06/07/1988

RPI 920

Indeferimento

#9.2

06/07/1988

RPI 920

Deferimento

#9.1

02/09/1988

RPI 903

Exigência - art. 36 da LPI

#6.1

07/21/1987

RPI 874

Solicitação de exame técnico

#4.1

08/05/1986

RPI 824

Publicação do pedido de patente

#3.1

10/01/1985

RPI 780

Pedido de patente depositado

#2.1

05/08/1984

RPI 707

Carta-patente expirada

#21.1

10/04/1994

RPI 1244

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