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Official data from INPI

RADIER RÍGIDO EM MEMBRANAS HIPERBÓLICAS DE CONCRETO ARMADO

ConcedidaUtility Model
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Application data

Number

MU6401659

Type

Utility Model

Filing

10/10/1984

Publication

06/24/1986
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Progress at the INPI

  1. Filing10/10/84
  2. Publication05/20/86
  3. Examination08/19/86
  4. Allowance06/28/88
  5. Grant04/25/89
  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.

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Latest action published by the INPI: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Arbor Engenharia Ltda.

MG, BR

Inventors

R. F. (pessoa física)

BR

Technical data

IPC Classification

E02D 5/10

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/25/1989

RPI 966

Notificação para pagamento de retribuição

#13.1

10/25/1988

RPI 940

Deferimento

#9.1

06/28/1988

RPI 923

Exigência - art. 36 da LPI

#6.1

01/19/1988

RPI 900

14.7

01/21/1987

RPI 848

3.3

08/19/1986

RPI 826

Solicitação de exame técnico

#4.1

08/19/1986

RPI 826

Publicação do pedido de patente

#3.1

06/24/1986

RPI 818

Publicação do pedido de patente

#3.1

05/20/1986

RPI 813

Pedido de patente depositado

#2.1

01/08/1985

RPI 742

Carta-patente expirada

#21.1

11/22/1994

RPI 1251

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