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Official data from INPI

MÉTODO E APARELHAGEM PARA A PRODUÇÃO DE UM FERRO- ESPONJA ALTAMENTE METALIZADO, DESCARREGADO QUENTE

Arquivada/ExtintaInvention Patent

Application data

Number

PI9102214

Type

Invention Patent

Filing

05/29/1991

Publication

01/07/1992

Progress at the INPI

  1. Filing05/29/91
  2. Publication01/07/92
  3. Examination03/29/94
  4. Allowance06/16/98
  5. Grant11/24/98
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hylsa S.A. de C.V.

MX

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Inventors

F. C. (pessoa física)

MX

F. W. (pessoa física)

MX

J. B. (pessoa física)

MX

Technical data

IPC Classification

Priority claims

US

531.930 · 06/01/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 29/05/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

06/16/1998

RPI 1434

6.2

03/26/1996

RPI 1321

Solicitação de exame técnico

#4.1

03/29/1994

RPI 1217

Publicação do pedido de patente

#3.1

01/07/1992

RPI 1101

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