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Official data from INPI

FILTROS ESPECIAIS PARA COLUNA DE DESSORÇÃO DE CARVÃO

Arquivada/ExtintaUtility Model

Application data

Number

MU7500971

Type

Utility Model

Filing

04/28/1995

Publication

11/11/1997

Progress at the INPI

  1. Filing04/28/95
  2. Publication11/11/97
  3. Examination
  4. Allowance04/02/02
  5. Grant09/03/02
  6. Expired07/16/13

The letters patent expired on 07/16/2013: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 07/16/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. D. (pessoa física)

MG, BR

See this company's full portfolio

Inventors

L. A. (pessoa física)

BR

M. L. (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 28/04/2010

07/16/2013

RPI 2219

Concessão da patente

#16.1

09/03/2002

RPI 1652

Deferimento

#9.1

04/02/2002

RPI 1630

Publicação do pedido de patente

#3.1

11/11/1997

RPI 1406

Pedido de patente depositado

#2.1

06/20/1995

RPI 1281

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