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Official data from INPI

DISPOSITIVO PARA DOBRAMENTO DE TUBOS A FRIO EM DIFERENTES RAIOS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9000657

Type

Invention Patent

Filing

02/14/1990

Publication

10/15/1991

Progress at the INPI

  1. Filing02/14/90
  2. Publication10/15/91
  3. Examination04/07/92
  4. Allowance02/06/96
  5. Grant08/27/96
  6. Expired05/11/10

The letters patent expired on 05/11/2010: 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: 05/11/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A - Usiminas

MG, BR

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Inventors

A. L. (pessoa física)

BR

E. S. (pessoa física)

BR

J. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 14/02/2005

05/11/2010

RPI 2053

Concessão da patente

#16.1

08/27/1996

RPI 1343

Deferimento

#9.1

02/06/1996

RPI 1314

Solicitação de exame técnico

#4.1

04/07/1992

RPI 1114

Publicação do pedido de patente

#3.1

10/15/1991

RPI 1089

Pedido de patente depositado

#2.1

05/22/1990

RPI 1019

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