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Official data from INPI

Válvula hidrocefálica com dispositivos de controle de pressão.

ConcedidaUtility Model

Application data

Number

MU6301014

Type

Utility Model

Filing

07/14/1983

Publication

02/20/1985

Progress at the INPI

  1. Filing07/14/83
  2. Publication02/20/85
  3. Examination08/13/85
  4. Allowance10/06/87
  5. Grant06/28/88
  6. Expired11/22/94

The letters patent expired on 11/22/1994: 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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. M. (pessoa física)

BR

Inventors

S. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

02/09/1988

RPI 903

Deferimento

#9.1

10/06/1987

RPI 885

Exigência - art. 36 da LPI

#6.1

08/19/1986

RPI 826

Solicitação de exame técnico

#4.1

08/13/1985

RPI 773

Publicação do pedido de patente

#3.1

02/20/1985

RPI 748

Pedido de patente depositado

#2.1

09/27/1983

RPI 675

Carta-patente expirada

#21.1

11/22/1994

RPI 1251

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