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Official data from INPI

PROCESSO PARA PRODUZIR TIRA E CHAPA DE AÇO AO SILÍCIO REDUZIDO A FRIO.

Em AnáliseInvention Patent

Application data

Number

PI8401076

Type

Invention Patent

Filing

03/09/1984

Publication

10/16/1984

Progress at the INPI

  1. Filing03/09/84
  2. Publication10/16/84
  3. Examination05/07/85
  4. Allowance03/13/90
  5. Grant09/25/90
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 08/30/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Armco Inc.

US

See this company's full portfolio

Inventors

M. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

473.775 · 03/10/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.1

08/30/1988

RPI 932

6.2

06/28/1988

RPI 923

Solicitação de exame técnico

#4.1

05/07/1985

RPI 759

Publicação do pedido de patente

#3.1

10/16/1984

RPI 730

Pedido de patente depositado

#2.1

05/15/1984

RPI 708

Carta-patente expirada

#21.1

Patente extinta em 09/03/99

07/08/2008

RPI 1957

Pedido de licença compulsória

#20.1

11/17/1992

RPI 1146

Concessão da patente

#16.1

09/25/1990

RPI 1034

Notificação para pagamento de retribuição

#13.1

07/24/1990

RPI 1025

Deferimento

#9.1

03/13/1990

RPI 1009

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