Carta-patente expirada
#21.1
Patente extinta em 21/11/2010
05/21/2013
RPI 2211
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Official data from INPI
PROCESSO PARA A PREPARAÇÃO DE PIGMENTOS DE TiO2
Arquivada/ExtintaInvention Patent
Application data
Number
PI9005887Type
Invention Patent
Filing
11/21/1990
Publication
09/24/1991
Progress at the INPI
- Filing11/21/90
- Publication09/24/91
- Examination12/14/93
- Allowance05/04/99
- Grant11/03/99
- 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 specialistLatest action published by the INPI: 05/21/2013. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
B. A. (pessoa física)
DE
Kerr-Mcgee Pigments GMBH & CO. KG
DE
Inventors
D. L. (pessoa física)
DE
G. W. (pessoa física)
DE
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Transferência deferida
#25.1
Transferido de Bayer Aktiengesellschaft.
06/12/2001
RPI 1588
Concessão da patente
#16.1
11/03/1999
RPI 1504
Deferimento
#9.1
05/04/1999
RPI 1478
Exigência - art. 36 da LPI
#6.1
07/21/1998
RPI 1439
Exigência - art. 36 da LPI
#6.1
12/30/1997
RPI 1410
Solicitação de exame técnico
#4.1
12/14/1993
RPI 1202
Publicação do pedido de patente
#3.1
09/24/1991
RPI 1086
Pedido de patente depositado
#2.1
05/14/1991
RPI 1067
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