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Official data from INPI

PROCESSO PARA APLAINAMENTO TÉRMICO DE AÇO AO SILÍCIO DE GRÃO ORIENTADO E AÇO AO SILÍCIO DE GRÃO ORIENTADO SEMI-PROCESSADO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9006266

Type

Invention Patent

Filing

12/10/1990

Publication

09/24/1991

Progress at the INPI

  1. Filing12/10/90
  2. Publication09/24/91
  3. Examination09/08/92
  4. Allowance09/08/99
  5. Grant03/08/00
  6. Expired05/28/13

The letters patent expired on 05/28/2013: 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: 05/28/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Armco, Inc.

US

See this company's full portfolio

Inventors

D. L. (pessoa física)

US

J. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

448.397 · 12/11/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 10/12/2010

05/28/2013

RPI 2212

Concessão da patente

#16.1

03/08/2000

RPI 1522

Deferimento

#9.1

09/08/1999

RPI 1496

Exigência - art. 36 da LPI

#6.1

01/05/1999

RPI 1461

6.2

03/19/1996

RPI 1320

Solicitação de exame técnico

#4.1

09/08/1992

RPI 1136

Publicação do pedido de patente

#3.1

09/24/1991

RPI 1086

Pedido de patente depositado

#2.1

05/21/1991

RPI 1068

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