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Official data from INPI

PROCESSO DE TRATAMENTO DA SUPERFÍCIE DE UM OBJETO SÓLIDO FEITO DE MATERIAL COM ESTRUTURA VÍTREA, CONTENDO METAL PESADO, PARA FORMAR UMA BARREIRA DE DIFUSÃO PARA OS ÍONS DO REFERIDO METAL

Arquivada/ExtintaInvention Patent
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Application data

Number

PI9102094

Type

Invention Patent

Filing

05/21/1991

Publication

12/24/1991
View on INPI

Progress at the INPI

  1. Filing05/21/91
  2. Publication12/24/91
  3. Examination12/28/93
  4. Allowance11/03/98
  5. Grant04/27/99
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. B. (pessoa física)

FR

Inventors

G. C. (pessoa física)

FR

Technical data

IPC Classification

C03C 21/00

Priority claims

FR

90 440 046.2 EP · 05/23/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 21/05/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

04/27/1999

RPI 1477

Deferimento

#9.1

11/03/1998

RPI 1452

Exigência - art. 36 da LPI

#6.1

04/07/1998

RPI 1424

Exigência - art. 36 da LPI

#6.1

09/09/1997

RPI 1397

Solicitação de exame técnico

#4.1

12/28/1993

RPI 1204

Publicação do pedido de patente

#3.1

12/24/1991

RPI 1099

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