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Official data from INPI

ESBOÇO DE VIGA, VIGA CONFORMADA E PROCESSO DE LINGOTAMENTO CONTÍNUO DE UM ESBOÇO DE VIGA

Arquivada/ExtintaInvention PatentPCT · US1991002191

Application data

Number

PI9105726

Type

Invention Patent

Filing

03/28/1991

Publication

05/19/1992

PCT

US1991002191

Progress at the INPI

  1. Filing03/28/91
  2. Publication05/19/92
  3. Examination11/23/93
  4. Allowance09/22/98
  5. Grant02/23/99
  6. Expired06/11/13

The letters patent expired on 06/11/2013: 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: 06/11/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chaparral Investments, Inc.

US

Chaparral Steel Company

US

Chaparral Steel Investments, Inc.

US

Inventors

G. F. (pessoa física)

US

L. R. (pessoa física)

US

L. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

511,653 · 04/20/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 28/03/2011

06/11/2013

RPI 2214

Alteração de nome deferida

#25.4

Alterado de: Chaparral Investments, Inc.

03/06/2007

RPI 1887

Alteração de nome deferida

#25.4

Alterado de: Chaparral Steel Company

02/21/2007

RPI 1885

Concessão da patente

#16.1

02/23/1999

RPI 1468

Deferimento

#9.1

09/22/1998

RPI 1448

Solicitação de exame técnico

#4.1

11/23/1993

RPI 1199

Notificação de entrada na fase nacional - PCT

#1.3

05/19/1992

RPI 1120

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