Carta-patente expirada
#21.1
Patente extinta em 20/05/2011
06/04/2013
RPI 2213
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Official data from INPI
PROCESSO DE EXTRAÇÃO DE OURO A PARTIR DE SAIS RESIDUAIS
Arquivada/ExtintaInvention Patent
Application data
Number
PI9102057Type
Invention Patent
Filing
05/20/1991
Publication
09/10/1991
Progress at the INPI
- Filing05/20/91
- Publication09/10/91
- Examination12/03/91
- Allowance05/11/99
- Grant02/22/00
- 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
Degussa S/A
SP, BR
Inventors
U. S. (pessoa física)
BR
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Concessão da patente
#16.1
02/22/2000
RPI 1520
Deferimento
#9.1
05/11/1999
RPI 1479
Exigência - art. 36 da LPI
#6.1
08/05/1997
RPI 1392
15.18
12/03/1991
RPI 1096
Solicitação de exame técnico
#4.1
12/03/1991
RPI 1096
15.15
10/22/1991
RPI 1090
Pedido de patente depositado
#2.1
09/24/1991
RPI 1086
Publicação antecipada
#3.2
09/10/1991
RPI 1084
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