Carta-patente expirada
#21.1
Patente extinta em 14/08/2005
05/25/2010
RPI 2055
Application data
Number
PI9004022Type
Filing
Publication
The letters patent expired on 05/25/2010: 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: 05/25/2010. We update with every new RPI gazette, published weekly.
Applicants
Haliburton Company
US
Halliburton Company
US
Inventors
D. W. (pessoa física)
US
K. C. (pessoa física)
US
T. S. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 14/08/2005
05/25/2010
RPI 2055
#16.1
12/27/1994
RPI 1256
#13.1
10/11/1994
RPI 1245
#9.1
06/07/1994
RPI 1227
#4.1
04/07/1992
RPI 1114
#3.1
11/12/1991
RPI 1093
#2.1
02/19/1991
RPI 1055
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