Solicitação de exame técnico
#4.1
10/11/1988
RPI 938
Application data
Number
PI8701331Type
Filing
Publication
The letters patent expired on 12/05/2012: 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: 10/11/1988. We update with every new RPI gazette, published weekly.
Applicants
Nalco Chemical Company
US
Nalco Company
US
ONDEO Nalco Company
US
Inventors
D. J. (pessoa física)
US
J. H. (pessoa física)
US
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
10/11/1988
RPI 938
#3.1
01/05/1988
RPI 898
#2.1
07/07/1987
RPI 872
#21.1
Patente extinta em 29/06/2009
12/05/2012
RPI 2187
#25.4
Alterado de: ONDEO Nalco Company
12/13/2005
RPI 1823
#25.7
Alterada a sede do Titular conforme requerido na Petição nº 057678/RJ de 02/12/2004.
12/13/2005
RPI 1823
#25.4
Alterado de: Nalco Chemical Company
11/29/2005
RPI 1821
#25.7
Alterada a sede do Titular conforme requerido na Petição nº 057678/RJ de 02/12/2004.
11/29/2005
RPI 1821
#16.1
06/29/1999
RPI 1486
#15.11
Alterada a Classificação para Int.Cl.6 C23F 11/173 e C23F 11/167
12/22/1998
RPI 1459
#9.1
12/22/1998
RPI 1459
#6.1
08/04/1998
RPI 1441
#7.1
11/25/1997
RPI 1408
#7.1
02/08/1994
RPI 1210
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Same category
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