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Official data from INPI

PEÇAS CERÂMICAS NÃO QUEIMADAS PARA CONSTRUÇÃO A CONSTRUÇÃO CIVIL

Arquivada/ExtintaInvention Patent

Application data

Number

PI9000752

Type

Invention Patent

Filing

02/19/1990

Publication

10/15/1991

Progress at the INPI

  1. Filing02/19/90
  2. Publication10/15/91
  3. Examination03/17/92
  4. Allowance08/06/96
  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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A - Usiminas

MG, BR

Usinas Siderúrgicas de Minas Gerais S/A - Usiminas (Grupo Siderbrás)

MG, BR

See this company's full portfolio

Inventors

B. T. (pessoa física)

BR

E. A. (pessoa física)

BR

G. F. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 19/02/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

06/24/1997

RPI 1386

Deferimento

#9.1

08/06/1996

RPI 1340

Solicitação de exame técnico

#4.1

03/17/1992

RPI 1111

Publicação do pedido de patente

#3.1

10/15/1991

RPI 1089

Pedido de patente depositado

#2.1

03/19/1991

RPI 1059

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