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Official data from INPI

SISTEMA DE FECHAMENTO PARA TUBO ABERTO LONGITUDINALMENTE

Arquivada/ExtintaUtility Model

Application data

Number

MU5801094

Type

Utility Model

Filing

08/17/1978

Publication

-

Progress at the INPI

  1. Filing08/17/78
  2. Publication
  3. Examination
  4. Allowance08/17/82
  5. Grant05/31/83
  6. Expired09/27/88

The letters patent expired on 09/27/1988: 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: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. L. (pessoa física)

Inventors

R. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

09/27/1988

RPI 936

Cessão de direito de exploração

#22.1

09/29/1987

RPI 884

20.7

09/04/1984

RPI 724

Concessão da patente

#16.1

05/31/1983

RPI 658

Deferimento

#9.1

08/17/1982

RPI 617

Exigência - art. 36 da LPI

#6.1

03/16/1982

RPI 595

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