Publicação do pedido de patente
#3.1
09/26/1989
RPI 988
Application data
Number
PI8900408Type
Filing
Publication
The letters patent expired on 12/15/2009: 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: 09/26/1989. We update with every new RPI gazette, published weekly.
Applicants
Halliburton Company
US
Inventors
S. S. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
09/26/1989
RPI 988
#2.1
03/21/1989
RPI 961
#21.1
Patente extinta em 31/01/2004
12/15/2009
RPI 2032
#16.1
05/31/1994
RPI 1226
#9.1
11/03/1993
RPI 1196
#6.1
03/09/1993
RPI 1162
#4.1
08/20/1991
RPI 1081
From the same holder
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