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Official data from INPI

MEMBRANA HIPERBÓLICA EM AÇO CONCRETO.

ConcedidaUtility Model

Application data

Number

MU6300936

Type

Utility Model

Filing

07/06/1983

Publication

11/22/1983

Progress at the INPI

  1. Filing07/06/83
  2. Publication11/22/83
  3. Examination01/17/84
  4. Allowance07/21/87
  5. Grant04/26/88
  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: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ARBOR ENGENHARIA LTDA

Inventors

F. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

11/24/1987

RPI 892

Deferimento

#9.1

07/21/1987

RPI 874

14.7

12/30/1986

RPI 845

Exigência - art. 36 da LPI

#6.1

07/08/1986

RPI 820

Conhecimento de parecer técnico

#7.1

07/02/1985

RPI 767

Solicitação de exame técnico

#4.1

01/17/1984

RPI 691

Publicação antecipada

#3.2

11/22/1983

RPI 683

Pedido de patente depositado

#2.1

08/16/1983

RPI 669

Carta-patente expirada

#21.1

11/22/1994

RPI 1251

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