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Official data from INPI

PRENSA DE FRICÇÃO PARA PRENSAGEM DE MASSAS CERÂMICAS E REFRATÁRIAS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9001950

Type

Invention Patent

Filing

04/26/1990

Publication

11/12/1991

Progress at the INPI

  1. Filing04/26/90
  2. Publication11/12/91
  3. Examination02/18/92
  4. Allowance03/22/94
  5. Grant08/26/97
  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

Magnesita S/A

MG, BR

See this company's full portfolio

Inventors

G. C. (pessoa física)

BR

P. M. (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 26/04/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

08/26/1997

RPI 1395

110

03/18/1997

RPI 1372

120

01/16/1996

RPI 1311

Recurso

#12.1

07/12/1994

RPI 1232

Deferimento

#9.1

03/22/1994

RPI 1216

Solicitação de exame técnico

#4.1

02/18/1992

RPI 1107

Publicação do pedido de patente

#3.1

11/12/1991

RPI 1093

Pedido de patente depositado

#2.1

09/11/1990

RPI 1032

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