Republicação - classificação IPC
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: E02D 29/10; E03B 7/12; E21B 36/04.
03/20/2018
RPI 2463
Application data
Number
PI9004940Type
Filing
Publication
The letters patent expired on 06/01/2010: 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: 03/20/2018. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
C. G. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: E02D 29/10; E03B 7/12; E21B 36/04.
03/20/2018
RPI 2463
#21.1
Patente extinta em 02/10/2005
06/01/2010
RPI 2056
#16.1
03/01/1995
RPI 1265
#13.1
09/27/1994
RPI 1243
#9.1
05/10/1994
RPI 1223
#4.1
11/03/1992
RPI 1144
#3.1
04/07/1992
RPI 1114
#2.1
04/02/1991
RPI 1061
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Same category
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