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Official data from INPI

DISPOSIÇÃO CONSTRUTIVA EM SISTEMA DE ACIONAMENTO DE VÁLVULA DE DESCARGA.

ConcedidaUtility Model

Application data

Number

MU6401082

Type

Utility Model

Filing

07/12/1984

Publication

02/18/1986

Progress at the INPI

  1. Filing07/12/84
  2. Publication02/18/86
  3. Examination06/24/86
  4. Allowance04/26/88
  5. Grant12/27/88
  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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Duratex Sociedade Anônima

SP, BR

See this company's full portfolio

Inventors

P. A. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1988

RPI 949

Notificação para pagamento de retribuição

#13.1

08/09/1988

RPI 929

Deferimento

#9.1

04/26/1988

RPI 914

Exigência - art. 36 da LPI

#6.1

11/17/1987

RPI 891

Solicitação de exame técnico

#4.1

06/24/1986

RPI 818

Publicação do pedido de patente

#3.1

02/18/1986

RPI 800

Pedido de patente depositado

#2.1

09/11/1984

RPI 725

Carta-patente expirada

#21.1

11/22/1994

RPI 1251

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