Carta-patente expirada
#21.1
Patente extinta em 27/06/2011
06/04/2013
RPI 2213
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Official data from INPI
MATERIAIS COMPÓSITOS DE PRATA - OU LIGA DE PRATA/ COBRE-ÓXIDO DE METAL E PROCESSO DE PRODUÇÃO DO MESMO
Arquivada/ExtintaInvention Patent
Application data
Number
PI9102714Type
Invention Patent
Filing
06/27/1991
Publication
02/04/1992
Progress at the INPI
- Filing06/27/91
- Publication02/04/92
- Examination07/06/93
- Allowance02/09/99
- Grant08/24/99
- 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.
Talk to a specialistLatest action published by the INPI: 06/04/2013. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
A. S. (pessoa física)
JP
Sumitomo Metal Mining Co., Ltd.
JP
Inventors
A. S. (pessoa física)
JP
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Concessão da patente
#16.1
08/24/1999
RPI 1494
Deferimento
#9.1
02/09/1999
RPI 1466
6.2
03/26/1996
RPI 1321
Solicitação de exame técnico
#4.1
07/06/1993
RPI 1179
Publicação do pedido de patente
#3.1
02/04/1992
RPI 1105
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