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Official data from INPI

PROCESSO E APARELHO PARA ADICIONAR PARTÍCULAS SÓLIDAS DE UM INGREDIENTE FORMADOR DE LIGA A METAL EM FUSÃO E BOCAL PARA DIRIGIR PARTÍCULAS SÓLIDAS DE UM INGREDIENTE FORMADOR DE LIGA A UMA CORRENTE DE METAL EM FUSÃO

Prazo de SigiloInvention Patent

Application data

Number

PI8903269

Type

Invention Patent

Filing

07/03/1989

Publication

11/13/1990

Progress at the INPI

  1. Filing07/03/89
  2. Publication11/13/90
  3. Examination02/26/91
  4. Allowance10/01/96
  5. Grant06/24/97
  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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Inland Steel Company

US

See this company's full portfolio

Inventors

M. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

296,666 · 01/13/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

10/24/1989

RPI 992

Carta-patente expirada

#21.1

Patente extinta em 03/07/2009

05/21/2013

RPI 2211

Concessão da patente

#16.1

06/24/1997

RPI 1386

Deferimento

#9.1

10/01/1996

RPI 1348

6.2

03/19/1996

RPI 1320

Solicitação de exame técnico

#4.1

02/26/1991

RPI 1056

Publicação do pedido de patente

#3.1

11/13/1990

RPI 1041

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