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Official data from INPI

Processo para a fundição de tira por canal aberto para material fundido e aparelho para a fundição de tira por canal aberto

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004831

Type

Invention Patent

Filing

09/26/1990

Publication

12/24/1991

Progress at the INPI

  1. Filing09/26/90
  2. Publication12/24/91
  3. Examination05/04/93
  4. Allowance09/09/97
  5. Grant07/28/98
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Armco, Inc.

US

See this company's full portfolio

Inventors

D. F. (pessoa física)

US

E. K. (pessoa física)

US

K. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

543.612 · 06/22/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 26/09/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

09/09/1997

RPI 1397

6.2

03/12/1996

RPI 1319

Solicitação de exame técnico

#4.1

05/04/1993

RPI 1170

Publicação do pedido de patente

#3.1

12/24/1991

RPI 1099

Pedido de patente depositado

#2.1

04/02/1991

RPI 1061

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