Carta-patente expirada
#21.1
Patente extinta em 28/02/2010
01/08/2013
RPI 2192
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Official data from INPI
PROCESSO PARA A PREPARAÇÃO DE UM CONCENTRADO DE ADITIVO DE ÓLEO LUBRIFICANTE E COMPOSIÇÃO DE ÓLEO LUBRIFICANTE
Arquivada/ExtintaInvention Patent
Application data
Number
PI9000937Type
Invention Patent
Filing
02/28/1990
Publication
02/19/1991
Progress at the INPI
- Filing02/28/90
- Publication02/19/91
- Examination05/04/93
- Allowance01/21/98
- Grant08/25/98
- Expired01/08/13
The letters patent expired on 01/08/2013: 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: 01/08/2013. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
BP Chemicals (Additives) Limited.
GB
Lubrizol Adibis Holdings (UK) Limited
GB
Inventors
C. C. (pessoa física)
GB
D. D. (pessoa física)
GB
S. O. (pessoa física)
GB
Technical data
IPC Classification
Priority claims
GB
8904344.2 · 02/25/1989
GB
8904345.9 · 02/25/1989
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Alteração de nome deferida
#25.4
Alterado de BP Chemicals (Additives) Limited.
06/19/2001
RPI 1589
Concessão da patente
#16.1
08/25/1998
RPI 1444
Deferimento
#9.1
01/21/1998
RPI 1413
Exigência - art. 36 da LPI
#6.1
02/12/1997
RPI 1367
Pedido de certificado de adição de invenção
#5.1
09/08/1993
RPI 1188
Solicitação de exame técnico
#4.1
05/04/1993
RPI 1170
Publicação do pedido de patente
#3.1
02/19/1991
RPI 1055
Pedido de patente depositado
#2.1
05/22/1990
RPI 1019
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